Q: Is 128,642 a Prime Number?
A: No, 128,642 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 128642 can be evenly divided by 1 2 131 262 491 982 64,321 and 128,642, with no remainder.
Since 128,642 cannot be divided by just 1 and 128,642, it is not a prime number.