Q: Is 400,138 a Prime Number?
A: No, 400,138 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 400138 can be evenly divided by 1 2 59 118 3,391 6,782 200,069 and 400,138, with no remainder.
Since 400,138 cannot be divided by just 1 and 400,138, it is not a prime number.