Q: Is 4,223,420 a Prime Number?
A: No, 4,223,420 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 4223420 can be evenly divided by 1 2 4 5 10 20 47 94 188 235 470 940 4,493 8,986 17,972 22,465 44,930 89,860 211,171 422,342 844,684 1,055,855 2,111,710 and 4,223,420, with no remainder.
Since 4,223,420 cannot be divided by just 1 and 4,223,420, it is not a prime number.