12660429 has 4 divisors (see below), whose sum is σ = 16880576. Its totient is φ = 8440284.

The previous prime is 12660421. The next prime is 12660457. The reversal of 12660429 is 92406621.

12660429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12660429 - 2³ = 12660421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12660396 and 12660405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12660421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2110069 + ... + 2110074.

It is an arithmetic number, because the mean of its divisors is an integer number (4220144).

Almost surely, 2^12660429 is an apocalyptic number.

It is an amenable number.

12660429 is a deficient number, since it is larger than the sum of its proper divisors (4220147).

12660429 is an equidigital number, since it uses as much as digits as its factorization.

12660429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4220146.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 12660429 is about 3558.1496595843. The cubic root of 12660429 is about 233.0680847529.

The spelling of 12660429 in words is "twelve million, six hundred sixty thousand, four hundred twenty-nine".