12498921 has 32 divisors (see below), whose sum is σ = 19430400. Its totient is φ = 7931520.

The previous prime is 12498907. The next prime is 12498923. The reversal of 12498921 is 12989421.

It is not a de Polignac number, because 12498921 - 2⁷ = 12498793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12498923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91165 + ... + 91301.

It is an arithmetic number, because the mean of its divisors is an integer number (607200).

Almost surely, 2^12498921 is an apocalyptic number.

It is an amenable number.

12498921 is a deficient number, since it is larger than the sum of its proper divisors (6931479).

12498921 is a wasteful number, since it uses less digits than its factorization.

12498921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286 (or 280 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 12498921 is about 3535.3813089962. The cubic root of 12498921 is about 232.0727637894.

The spelling of 12498921 in words is "twelve million, four hundred ninety-eight thousand, nine hundred twenty-one".