Q: Is 642,104 a Prime Number?
A: No, 642,104 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 642104 can be evenly divided by 1 2 4 8 80,263 160,526 321,052 and 642,104, with no remainder.
Since 642,104 cannot be divided by just 1 and 642,104, it is not a prime number.