Q: Is 42,428 a Prime Number?
A: No, 42,428 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 42428 can be evenly divided by 1 2 4 10,607 21,214 and 42,428, with no remainder.
Since 42,428 cannot be divided by just 1 and 42,428, it is not a prime number.