Q: Is 497,421 a Prime Number?
A: No, 497,421 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 497421 can be evenly divided by 1 3 9 23 27 69 81 89 207 243 267 621 801 1,863 2,047 2,403 5,589 6,141 7,209 18,423 21,627 55,269 165,807 and 497,421, with no remainder.
Since 497,421 cannot be divided by just 1 and 497,421, it is not a prime number.