12138115 has 12 divisors (see below), whose sum is σ = 16011072. Its totient is φ = 8827280.

The previous prime is 12138107. The next prime is 12138127. The reversal of 12138115 is 51183121.

12138115 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12138115 - 2³ = 12138107 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9427 + ... + 10636.

It is an arithmetic number, because the mean of its divisors is an integer number (1334256).

Almost surely, 2^12138115 is an apocalyptic number.

12138115 is a deficient number, since it is larger than the sum of its proper divisors (3872957).

12138115 is a wasteful number, since it uses less digits than its factorization.

12138115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20090 (or 20079 counting only the distinct ones).

The product of its digits is 240, while the sum is 22.

The square root of 12138115 is about 3483.9797645796. The cubic root of 12138115 is about 229.8178456945.

The spelling of 12138115 in words is "twelve million, one hundred thirty-eight thousand, one hundred fifteen".