Q: Is 40,405 a Prime Number?
A: No, 40,405 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 40405 can be evenly divided by 1 5 8,081 and 40,405, with no remainder.
Since 40,405 cannot be divided by just 1 and 40,405, it is not a prime number.