Q: Is 421,430 a Prime Number?
A: No, 421,430 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 421430 can be evenly divided by 1 2 5 10 17 34 37 67 74 85 134 170 185 335 370 629 670 1,139 1,258 2,278 2,479 3,145 4,958 5,695 6,290 11,390 12,395 24,790 42,143 84,286 210,715 and 421,430, with no remainder.
Since 421,430 cannot be divided by just 1 and 421,430, it is not a prime number.