11520129 has 4 divisors (see below), whose sum is σ = 15360176. Its totient is φ = 7680084.

The previous prime is 11520083. The next prime is 11520191. The reversal of 11520129 is 92102511.

11520129 is digitally balanced in base 3, 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 11520129 - 2¹⁷ = 11389057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11520629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1920019 + ... + 1920024.

It is an arithmetic number, because the mean of its divisors is an integer number (3840044).

Almost surely, 2^11520129 is an apocalyptic number.

It is an amenable number.

11520129 is a deficient number, since it is larger than the sum of its proper divisors (3840047).

11520129 is an equidigital number, since it uses as much as digits as its factorization.

11520129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3840046.

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 11520129 is about 3394.1315531370. The cubic root of 11520129 is about 225.8494899397.

The spelling of 11520129 in words is "eleven million, five hundred twenty thousand, one hundred twenty-nine".