Q: Is 400,720 a Prime Number?
A: No, 400,720 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 400720 can be evenly divided by 1 2 4 5 8 10 16 20 40 80 5,009 10,018 20,036 25,045 40,072 50,090 80,144 100,180 200,360 and 400,720, with no remainder.
Since 400,720 cannot be divided by just 1 and 400,720, it is not a prime number.