Q: Is 642,765 a Prime Number?
A: No, 642,765 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 642765 can be evenly divided by 1 3 5 15 73 219 365 587 1,095 1,761 2,935 8,805 42,851 128,553 214,255 and 642,765, with no remainder.
Since 642,765 cannot be divided by just 1 and 642,765, it is not a prime number.