12085138 has 8 divisors (see below), whose sum is σ = 19522188. Its totient is φ = 5577744.

The previous prime is 12085111. The next prime is 12085163. The reversal of 12085138 is 83158021.

12085138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12061729 + 23409 = 3473^2 + 153^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232381 + ... + 232432.

Almost surely, 2^12085138 is an apocalyptic number.

12085138 is a deficient number, since it is larger than the sum of its proper divisors (7437050).

12085138 is a wasteful number, since it uses less digits than its factorization.

12085138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464828.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 12085138 is about 3476.3685075089. The cubic root of 12085138 is about 229.4830101830.

It can be divided in two parts, 120 and 85138, that added together give a palindrome (85258).

The spelling of 12085138 in words is "twelve million, eighty-five thousand, one hundred thirty-eight".