12135892 has 12 divisors (see below), whose sum is σ = 22487220. Its totient is φ = 5710976.

The previous prime is 12135859. The next prime is 12135899. The reversal of 12135892 is 29853121.

It can be written as a sum of positive squares in 2 ways, for example, as 3632836 + 8503056 = 1906^2 + 2916^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12135899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89167 + ... + 89302.

It is an arithmetic number, because the mean of its divisors is an integer number (1873935).

Almost surely, 2^12135892 is an apocalyptic number.

It is an amenable number.

12135892 is a deficient number, since it is larger than the sum of its proper divisors (10351328).

12135892 is a wasteful number, since it uses less digits than its factorization.

12135892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178490 (or 178488 counting only the distinct ones).

The product of its digits is 4320, while the sum is 31.

The square root of 12135892 is about 3483.6607182675. The cubic root of 12135892 is about 229.8038150628.

The spelling of 12135892 in words is "twelve million, one hundred thirty-five thousand, eight hundred ninety-two".