12990424 has 16 divisors (see below), whose sum is σ = 24876000. Its totient is φ = 6356832.

The previous prime is 12990421. The next prime is 12990427. The reversal of 12990424 is 42409921.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12990421) and next prime (12990427).

It is a super-2 number, since 2×12990424² = 337502231399552, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12990421) 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 in 3 ways as a sum of consecutive naturals, for example, 16899 + ... + 17650.

It is an arithmetic number, because the mean of its divisors is an integer number (1554750).

Almost surely, 2^12990424 is an apocalyptic number.

It is an amenable number.

12990424 is a deficient number, since it is larger than the sum of its proper divisors (11885576).

12990424 is a wasteful number, since it uses less digits than its factorization.

12990424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34602 (or 34598 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 12990424 is about 3604.2230785566. The cubic root of 12990424 is about 235.0757202801.

The spelling of 12990424 in words is "twelve million, nine hundred ninety thousand, four hundred twenty-four".