Q: Is 840,126 a Prime Number?
A: No, 840,126 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 840126 can be evenly divided by 1 2 3 6 7 14 21 42 83 166 241 249 482 498 581 723 1,162 1,446 1,687 1,743 3,374 3,486 5,061 10,122 20,003 40,006 60,009 120,018 140,021 280,042 420,063 and 840,126, with no remainder.
Since 840,126 cannot be divided by just 1 and 840,126, it is not a prime number.