Q: Is 542,540 a Prime Number?
A: No, 542,540 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 542540 can be evenly divided by 1 2 4 5 10 20 27,127 54,254 108,508 135,635 271,270 and 542,540, with no remainder.
Since 542,540 cannot be divided by just 1 and 542,540, it is not a prime number.