Q: Is 42,438 a Prime Number?
A: No, 42,438 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 42438 can be evenly divided by 1 2 3 6 11 22 33 66 643 1,286 1,929 3,858 7,073 14,146 21,219 and 42,438, with no remainder.
Since 42,438 cannot be divided by just 1 and 42,438, it is not a prime number.