Q: Is 642,909 a Prime Number?
A: No, 642,909 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 642909 can be evenly divided by 1 3 31 93 223 669 961 2,883 6,913 20,739 214,303 and 642,909, with no remainder.
Since 642,909 cannot be divided by just 1 and 642,909, it is not a prime number.