Q: Is 42,687 a Prime Number?
A: No, 42,687 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 42687 can be evenly divided by 1 3 9 17 27 31 51 81 93 153 279 459 527 837 1,377 1,581 2,511 4,743 14,229 and 42,687, with no remainder.
Since 42,687 cannot be divided by just 1 and 42,687, it is not a prime number.