Q: Is 1,391,724 a Prime Number?
A: No, 1,391,724 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 1391724 can be evenly divided by 1 2 3 4 6 9 12 18 36 67 134 201 268 402 577 603 804 1,154 1,206 1,731 2,308 2,412 3,462 5,193 6,924 10,386 20,772 38,659 77,318 115,977 154,636 231,954 347,931 463,908 695,862 and 1,391,724, with no remainder.
Since 1,391,724 cannot be divided by just 1 and 1,391,724, it is not a prime number.