12457499 has 2 divisors, whose sum is σ = 12457500. Its totient is φ = 12457498.

The previous prime is 12457457. The next prime is 12457519. The reversal of 12457499 is 99475421.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12457499 is a prime.

It is not a weakly prime, because it can be changed into another prime (12457409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6228749 + 6228750.

It is an arithmetic number, because the mean of its divisors is an integer number (6228750).

Almost surely, 2^12457499 is an apocalyptic number.

12457499 is a deficient number, since it is larger than the sum of its proper divisors (1).

12457499 is an equidigital number, since it uses as much as digits as its factorization.

12457499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 41.

The square root of 12457499 is about 3529.5182390802. The cubic root of 12457499 is about 231.8161134531.

The spelling of 12457499 in words is "twelve million, four hundred fifty-seven thousand, four hundred ninety-nine".