Q: Is 642,700 a Prime Number?
A: No, 642,700 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 642700 can be evenly divided by 1 2 4 5 10 20 25 50 100 6,427 12,854 25,708 32,135 64,270 128,540 160,675 321,350 and 642,700, with no remainder.
Since 642,700 cannot be divided by just 1 and 642,700, it is not a prime number.