Divisibility for 42

Publish date: 2024-06-04
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Show the divisibility for 42 in terms of 2,3,4,5,6,7,8,9,10,11
Divisibililty Check for 2
A number is divisible by 2 if the last digit ends in 0,2,4,6,8The last digit of 42 is 2
Since 2 is equal to 0,2,4,6,8, then 42 is divisible by 2
Divisibililty Check for 3
A number is divisible by 3 if the sum of it's digits ends is divisible by 3The sum of the digits for 42 is 4 + 2 = 6
Since 6 is divisible by 3, then 42 is divisible by 3
Divisibililty Check for 4
A number is divisible by 4 if the last two digits are divisible by 4The last 2 digits of 42 are 42
Since 42 is not divisible by 4, then 42 is not divisible by 4
Divisibililty Check for 5
A number is divisible by 5 if it ends with a 0 or 5The last digit of 42 is 2
Since 2 is not equal to 0 or 5, then 42 is not divisible by 5
Divisibililty Check for 6
A number is divisible by 6 if it is divisible by both 2 and 3Since 42 is divisible by 2 and 3, then 42 is divisible by 6
Divisibililty Check for 7
To see if 42 is divisible by 7, we multiply each respective digit by 1,3,2,6,4,5 working backwards and repeat as necessary2(1) + 4(3) = 15
Since 15 is not divisible by 7, then 42 is not divisible by 7
Divisibililty Check for 8
A number is divisible by 8 if the last three digits are divisible by 8The last 2 digits of 42 are 42
Since 42 is not divisible by 8, then 42 is not divisible by 8
Divisibililty Check for 9
A number is divisible by 9 if the sum of it's digits is divisible by 9.The sum of the digits for 42 is 4 + 2 = 6
Since 6 is not divisible by 9, then 42 is not divisible by 9
Divisibililty Check for 10
A number is divisible by 10 if it ends with a 0The last digit of 42 is 2
Since 2 is not equal to 0, then 42 is not divisible by 10
Divisibililty Check for 11
A number is divisible by 11 if the sum of the odd digits - the sum of the even digits = 0 or is a multiple of 11
Sum the odd digits:
42
4
Odd Sum = 4
Sum the even digits:
42
2
Even Sum = 2
Take the difference of the odd sum and the even sum:
Δ = Odd Sum - Even Sum
Δ = 4 - 2
Δ = 2
Divisibility Check:
Because Δ / 11 is not an integer = 3.8181818181818, then 42 is NOT divisible by 11

In summary, 42 is divisible by (2,3,6)


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Free Factorization Calculator - Given a positive integer, this calculates the following for that number:
1) Factor pairs and prime factorization and prime power decomposition
2) Factors and Proper Factors 3) Aliquot Sum
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What 3 formulas are used for the Factorization Calculator?

Find all pairs that have a product equal to the number you want to factor
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What 7 concepts are covered in the Factorization Calculator?

aliquot sumaliquot sum is the sum of all the factors of a number except the number itselfdigitAny of the numbers (0, 1, 2, 3, 4, 5, 6, 7, 8, 9) used to construct a numberfactora divisor of an integer n, also called a factor of n, is an integer m that may be multiplied by some integer to produce n.factorizationpowerhow many times to use the number in a multiplicationprime numbera natural number greater than 1 that is not a product of two smaller natural numbers.sumthe total amount resulting from the addition of two or more numbers, amounts, or items

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