Q: Is 421,980 a Prime Number?
A: No, 421,980 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 421980 can be evenly divided by 1 2 3 4 5 6 10 12 13 15 20 26 30 39 52 60 65 78 130 156 195 260 390 541 780 1,082 1,623 2,164 2,705 3,246 5,410 6,492 7,033 8,115 10,820 14,066 16,230 21,099 28,132 32,460 35,165 42,198 70,330 84,396 105,495 140,660 210,990 and 421,980, with no remainder.
Since 421,980 cannot be divided by just 1 and 421,980, it is not a prime number.