Q: Is 40,239 a Prime Number?
A: No, 40,239 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 40239 can be evenly divided by 1 3 9 17 51 153 263 789 2,367 4,471 13,413 and 40,239, with no remainder.
Since 40,239 cannot be divided by just 1 and 40,239, it is not a prime number.