Q: Is 7,406,721 a Prime Number?
A: No, 7,406,721 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 7406721 can be evenly divided by 1 3 7 9 21 27 63 81 189 567 13,063 39,189 91,441 117,567 274,323 352,701 822,969 1,058,103 2,468,907 and 7,406,721, with no remainder.
Since 7,406,721 cannot be divided by just 1 and 7,406,721, it is not a prime number.