Q: Is 7,121,500 a Prime Number?
A: No, 7,121,500 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 7121500 can be evenly divided by 1 2 4 5 10 20 25 50 100 125 250 500 14,243 28,486 56,972 71,215 142,430 284,860 356,075 712,150 1,424,300 1,780,375 3,560,750 and 7,121,500, with no remainder.
Since 7,121,500 cannot be divided by just 1 and 7,121,500, it is not a prime number.