Q: Is 542,187 a Prime Number?
A: No, 542,187 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 542187 can be evenly divided by 1 3 9 27 43 129 387 467 1,161 1,401 4,203 12,609 20,081 60,243 180,729 and 542,187, with no remainder.
Since 542,187 cannot be divided by just 1 and 542,187, it is not a prime number.