Q: Is 402,426 a Prime Number?
A: No, 402,426 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 402426 can be evenly divided by 1 2 3 6 9 18 79 158 237 283 474 566 711 849 1,422 1,698 2,547 5,094 22,357 44,714 67,071 134,142 201,213 and 402,426, with no remainder.
Since 402,426 cannot be divided by just 1 and 402,426, it is not a prime number.