Q: Is 642,708 a Prime Number?
A: No, 642,708 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 642708 can be evenly divided by 1 2 3 4 6 9 11 12 18 22 27 33 36 44 54 66 99 108 132 198 297 396 541 594 1,082 1,188 1,623 2,164 3,246 4,869 5,951 6,492 9,738 11,902 14,607 17,853 19,476 23,804 29,214 35,706 53,559 58,428 71,412 107,118 160,677 214,236 321,354 and 642,708, with no remainder.
Since 642,708 cannot be divided by just 1 and 642,708, it is not a prime number.