12105844 has 12 divisors (see below), whose sum is σ = 21212100. Its totient is φ = 6045248.

The previous prime is 12105829. The next prime is 12105851. The reversal of 12105844 is 44850121.

12105844 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 5664400 + 6441444 = 2380^2 + 2538^2 .

It is a congruent number.

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, 3072 + ... + 5800.

It is an arithmetic number, because the mean of its divisors is an integer number (1767675).

Almost surely, 2^12105844 is an apocalyptic number.

It is an amenable number.

12105844 is a deficient number, since it is larger than the sum of its proper divisors (9106256).

12105844 is a wasteful number, since it uses less digits than its factorization.

12105844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3842 (or 3840 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 12105844 is about 3479.3453407214. The cubic root of 12105844 is about 229.6139965244.

Adding to 12105844 its reverse (44850121), we get a palindrome (56955965).

The spelling of 12105844 in words is "twelve million, one hundred five thousand, eight hundred forty-four".