Q: Is 642,867 a Prime Number?
A: No, 642,867 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 642867 can be evenly divided by 1 3 421 509 1,263 1,527 214,289 and 642,867, with no remainder.
Since 642,867 cannot be divided by just 1 and 642,867, it is not a prime number.