Q: Is 724,540 a Prime Number?
A: No, 724,540 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 724540 can be evenly divided by 1 2 4 5 10 17 20 34 68 85 170 340 2,131 4,262 8,524 10,655 21,310 36,227 42,620 72,454 144,908 181,135 362,270 and 724,540, with no remainder.
Since 724,540 cannot be divided by just 1 and 724,540, it is not a prime number.