Q: Is 1,521,020 a Prime Number?
A: No, 1,521,020 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 1521020 can be evenly divided by 1 2 4 5 10 20 59 118 236 295 590 1,180 1,289 2,578 5,156 6,445 12,890 25,780 76,051 152,102 304,204 380,255 760,510 and 1,521,020, with no remainder.
Since 1,521,020 cannot be divided by just 1 and 1,521,020, it is not a prime number.