Q: Is 401,821 a Prime Number?
A: No, 401,821 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 401821 can be evenly divided by 1 7 137 419 959 2,933 57,403 and 401,821, with no remainder.
Since 401,821 cannot be divided by just 1 and 401,821, it is not a prime number.