Q: Is 242,540 a Prime Number?
A: No, 242,540 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 242540 can be evenly divided by 1 2 4 5 10 20 67 134 181 268 335 362 670 724 905 1,340 1,810 3,620 12,127 24,254 48,508 60,635 121,270 and 242,540, with no remainder.
Since 242,540 cannot be divided by just 1 and 242,540, it is not a prime number.