Q: Is 121,239 a Prime Number?
A: No, 121,239 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 121239 can be evenly divided by 1 3 9 19 57 171 709 2,127 6,381 13,471 40,413 and 121,239, with no remainder.
Since 121,239 cannot be divided by just 1 and 121,239, it is not a prime number.