Q: Is 427,420 a Prime Number?
A: No, 427,420 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 427420 can be evenly divided by 1 2 4 5 7 10 14 20 28 35 43 70 71 86 140 142 172 215 284 301 355 430 497 602 710 860 994 1,204 1,420 1,505 1,988 2,485 3,010 3,053 4,970 6,020 6,106 9,940 12,212 15,265 21,371 30,530 42,742 61,060 85,484 106,855 213,710 and 427,420, with no remainder.
Since 427,420 cannot be divided by just 1 and 427,420, it is not a prime number.