Q: Is 542,145 a Prime Number?
A: No, 542,145 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 542145 can be evenly divided by 1 3 5 15 47 141 235 705 769 2,307 3,845 11,535 36,143 108,429 180,715 and 542,145, with no remainder.
Since 542,145 cannot be divided by just 1 and 542,145, it is not a prime number.