Q: Is 638,124 a Prime Number?
A: No, 638,124 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 638124 can be evenly divided by 1 2 3 4 6 12 41 82 123 164 246 492 1,297 2,594 3,891 5,188 7,782 15,564 53,177 106,354 159,531 212,708 319,062 and 638,124, with no remainder.
Since 638,124 cannot be divided by just 1 and 638,124, it is not a prime number.