Q: Is 1,422,820 a Prime Number?
A: No, 1,422,820 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 1422820 can be evenly divided by 1 2 4 5 7 10 14 20 28 35 70 140 10,163 20,326 40,652 50,815 71,141 101,630 142,282 203,260 284,564 355,705 711,410 and 1,422,820, with no remainder.
Since 1,422,820 cannot be divided by just 1 and 1,422,820, it is not a prime number.