Q: Is 642,504 a Prime Number?
A: No, 642,504 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 642504 can be evenly divided by 1 2 3 4 6 8 12 19 24 38 57 76 114 152 228 456 1,409 2,818 4,227 5,636 8,454 11,272 16,908 26,771 33,816 53,542 80,313 107,084 160,626 214,168 321,252 and 642,504, with no remainder.
Since 642,504 cannot be divided by just 1 and 642,504, it is not a prime number.