Q: Is 8,221,420 a Prime Number?
A: No, 8,221,420 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 8221420 can be evenly divided by 1 2 4 5 10 20 411,071 822,142 1,644,284 2,055,355 4,110,710 and 8,221,420, with no remainder.
Since 8,221,420 cannot be divided by just 1 and 8,221,420, it is not a prime number.