Q: Is 423,765 a Prime Number?
A: No, 423,765 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 423765 can be evenly divided by 1 3 5 9 15 27 43 45 73 129 135 215 219 365 387 645 657 1,095 1,161 1,935 1,971 3,139 3,285 5,805 9,417 9,855 15,695 28,251 47,085 84,753 141,255 and 423,765, with no remainder.
Since 423,765 cannot be divided by just 1 and 423,765, it is not a prime number.