12708129 has 16 divisors (see below), whose sum is σ = 20504448. Its totient is φ = 6834432.

The previous prime is 12708127. The next prime is 12708139. The reversal of 12708129 is 92180721.

It is not a de Polignac number, because 12708129 - 2¹ = 12708127 is a prime.

It is a super-2 number, since 2×12708129² = 322993085361282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12708096 and 12708105.

It is not an unprimeable number, because it can be changed into a prime (12708127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17442 + ... + 18155.

It is an arithmetic number, because the mean of its divisors is an integer number (1281528).

Almost surely, 2^12708129 is an apocalyptic number.

It is an amenable number.

12708129 is a deficient number, since it is larger than the sum of its proper divisors (7796319).

12708129 is a wasteful number, since it uses less digits than its factorization.

12708129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35624.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 12708129 is about 3564.8462799958. The cubic root of 12708129 is about 233.3604238387.

The spelling of 12708129 in words is "twelve million, seven hundred eight thousand, one hundred twenty-nine".