Q: Is 642,102 a Prime Number?
A: No, 642,102 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 642102 can be evenly divided by 1 2 3 6 103 206 309 618 1,039 2,078 3,117 6,234 107,017 214,034 321,051 and 642,102, with no remainder.
Since 642,102 cannot be divided by just 1 and 642,102, it is not a prime number.