Q: Is 42,540 a Prime Number?
A: No, 42,540 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 42540 can be evenly divided by 1 2 3 4 5 6 10 12 15 20 30 60 709 1,418 2,127 2,836 3,545 4,254 7,090 8,508 10,635 14,180 21,270 and 42,540, with no remainder.
Since 42,540 cannot be divided by just 1 and 42,540, it is not a prime number.