Q: Is 400,724 a Prime Number?
A: No, 400,724 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 400724 can be evenly divided by 1 2 4 17 34 68 71 83 142 166 284 332 1,207 1,411 2,414 2,822 4,828 5,644 5,893 11,786 23,572 100,181 200,362 and 400,724, with no remainder.
Since 400,724 cannot be divided by just 1 and 400,724, it is not a prime number.