No, 42 and 108 are not relatively prime. Two even numbers cannot be relatively prime.
23 and 19
37 + 5
42
The only way for three prime numbers to have a sum of 42 is if one of the prime numbers is 2, as 2 is the only even prime number. The other two prime numbers must add up to 40, which can only be achieved by 3 and 37. Therefore, the three prime numbers that have a sum of 42 are 2, 3, and 37.
30 and 42
37 + 5
37 and 5
21 and 6 are two composite numbers that have 42 as a common multiple. One of the prime factors of 42, which is 3, is a prime factor of 21 and 6 as well. The prime factorization of 42 (2 x 3 x 7) includes the prime factorization of 21 (3 x 7) and 6 (2 x 3).
The prime factors of 42 are: 2,3,7
The prime numbers (factors) of 42 are: 2,3,7
37 and 5