Q: Is 542,385 a Prime Number?
A: No, 542,385 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 542385 can be evenly divided by 1 3 5 9 15 17 45 51 85 153 255 709 765 2,127 3,545 6,381 10,635 12,053 31,905 36,159 60,265 108,477 180,795 and 542,385, with no remainder.
Since 542,385 cannot be divided by just 1 and 542,385, it is not a prime number.