Q: Is 402,542 a Prime Number?
A: No, 402,542 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 402542 can be evenly divided by 1 2 7 14 28,753 57,506 201,271 and 402,542, with no remainder.
Since 402,542 cannot be divided by just 1 and 402,542, it is not a prime number.