Q: Is 400,120 a Prime Number?
A: No, 400,120 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 400120 can be evenly divided by 1 2 4 5 7 8 10 14 20 28 35 40 56 70 140 280 1,429 2,858 5,716 7,145 10,003 11,432 14,290 20,006 28,580 40,012 50,015 57,160 80,024 100,030 200,060 and 400,120, with no remainder.
Since 400,120 cannot be divided by just 1 and 400,120, it is not a prime number.