12129159 has 16 divisors (see below), whose sum is σ = 18627840. Its totient is φ = 6876480.

The previous prime is 12129127. The next prime is 12129167. The reversal of 12129159 is 95192121.

12129159 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12129159 - 2⁵ = 12129127 is a prime.

It is a super-4 number, since 4×12129159⁴ (a number of 29 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12129059) 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, 547 + ... + 4955.

It is an arithmetic number, because the mean of its divisors is an integer number (1164240).

Almost surely, 2^12129159 is an apocalyptic number.

12129159 is a deficient number, since it is larger than the sum of its proper divisors (6498681).

12129159 is a wasteful number, since it uses less digits than its factorization.

12129159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4550.

The product of its digits is 1620, while the sum is 30.

The square root of 12129159 is about 3482.6942156899. The cubic root of 12129159 is about 229.7613087705.

The spelling of 12129159 in words is "twelve million, one hundred twenty-nine thousand, one hundred fifty-nine".