12145844 has 6 divisors (see below), whose sum is σ = 21255234. Its totient is φ = 6072920.

The previous prime is 12145843. The next prime is 12145849. The reversal of 12145844 is 44854121.

12145844 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 only one way, i.e., 11641744 + 504100 = 3412^2 + 710^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12145843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1518227 + ... + 1518234.

It is an arithmetic number, because the mean of its divisors is an integer number (3542539).

Almost surely, 2^12145844 is an apocalyptic number.

It is an amenable number.

12145844 is a deficient number, since it is larger than the sum of its proper divisors (9109390).

12145844 is a wasteful number, since it uses less digits than its factorization.

12145844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3036465 (or 3036463 counting only the distinct ones).

The product of its digits is 5120, while the sum is 29.

The square root of 12145844 is about 3485.0888080507. The cubic root of 12145844 is about 229.8666145313.

Adding to 12145844 its reverse (44854121), we get a palindrome (56999965).

The spelling of 12145844 in words is "twelve million, one hundred forty-five thousand, eight hundred forty-four".