Q: Is 478,540 a Prime Number?
A: No, 478,540 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 478540 can be evenly divided by 1 2 4 5 10 20 71 142 284 337 355 674 710 1,348 1,420 1,685 3,370 6,740 23,927 47,854 95,708 119,635 239,270 and 478,540, with no remainder.
Since 478,540 cannot be divided by just 1 and 478,540, it is not a prime number.