Q: Is 3,120,138 a Prime Number?
A: No, 3,120,138 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 3120138 can be evenly divided by 1 2 3 6 7 9 14 18 21 42 63 126 24,763 49,526 74,289 148,578 173,341 222,867 346,682 445,734 520,023 1,040,046 1,560,069 and 3,120,138, with no remainder.
Since 3,120,138 cannot be divided by just 1 and 3,120,138, it is not a prime number.