Q: Is 421,830 a Prime Number?
A: No, 421,830 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 421830 can be evenly divided by 1 2 3 5 6 9 10 15 18 30 43 45 86 90 109 129 215 218 258 327 387 430 545 645 654 774 981 1,090 1,290 1,635 1,935 1,962 3,270 3,870 4,687 4,905 9,374 9,810 14,061 23,435 28,122 42,183 46,870 70,305 84,366 140,610 210,915 and 421,830, with no remainder.
Since 421,830 cannot be divided by just 1 and 421,830, it is not a prime number.