12429520 has 40 divisors (see below), whose sum is σ = 29060640. Its totient is φ = 4944000.

The previous prime is 12429511. The next prime is 12429523. The reversal of 12429520 is 2592421.

12429520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12429523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19771 + ... + 20389.

It is an arithmetic number, because the mean of its divisors is an integer number (726516).

Almost surely, 2^12429520 is an apocalyptic number.

12429520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12429520 is an abundant number, since it is smaller than the sum of its proper divisors (16631120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12429520 is a wasteful number, since it uses less digits than its factorization.

12429520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883 (or 877 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 12429520 is about 3525.5524389803. The cubic root of 12429520 is about 231.6424337321.

The spelling of 12429520 in words is "twelve million, four hundred twenty-nine thousand, five hundred twenty".