Q: Is 7,421,427 a Prime Number?
A: No, 7,421,427 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 7421427 can be evenly divided by 1 3 9 13 39 117 137 411 463 1,233 1,389 1,781 4,167 5,343 6,019 16,029 18,057 54,171 63,431 190,293 570,879 824,603 2,473,809 and 7,421,427, with no remainder.
Since 7,421,427 cannot be divided by just 1 and 7,421,427, it is not a prime number.