Q: Is 542,157 a Prime Number?
A: No, 542,157 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 542157 can be evenly divided by 1 3 7 11 21 33 77 231 2,347 7,041 16,429 25,817 49,287 77,451 180,719 and 542,157, with no remainder.
Since 542,157 cannot be divided by just 1 and 542,157, it is not a prime number.