Q: Is 4,200,400 a Prime Number?
A: No, 4,200,400 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 4200400 can be evenly divided by 1 2 4 5 8 10 16 20 25 40 50 80 100 200 400 10,501 21,002 42,004 52,505 84,008 105,010 168,016 210,020 262,525 420,040 525,050 840,080 1,050,100 2,100,200 and 4,200,400, with no remainder.
Since 4,200,400 cannot be divided by just 1 and 4,200,400, it is not a prime number.