Q: Is 402,667 a Prime Number?
A: No, 402,667 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 402667 can be evenly divided by 1 19 21,193 and 402,667, with no remainder.
Since 402,667 cannot be divided by just 1 and 402,667, it is not a prime number.