Q: Is 420,063 a Prime Number?
A: No, 420,063 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 420063 can be evenly divided by 1 3 7 21 83 241 249 581 723 1,687 1,743 5,061 20,003 60,009 140,021 and 420,063, with no remainder.
Since 420,063 cannot be divided by just 1 and 420,063, it is not a prime number.