12126544 has 10 divisors (see below), whose sum is σ = 23495210. Its totient is φ = 6063264.

The previous prime is 12126533. The next prime is 12126547. The reversal of 12126544 is 44562121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10890000 + 1236544 = 3300^2 + 1112^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12126547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 378939 + ... + 378970.

It is an arithmetic number, because the mean of its divisors is an integer number (2349521).

Almost surely, 2^12126544 is an apocalyptic number.

It is an amenable number.

12126544 is a deficient number, since it is larger than the sum of its proper divisors (11368666).

12126544 is an equidigital number, since it uses as much as digits as its factorization.

12126544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757917 (or 757911 counting only the distinct ones).

The product of its digits is 1920, while the sum is 25.

The square root of 12126544 is about 3482.3187677179. The cubic root of 12126544 is about 229.7447956991.

Adding to 12126544 its reverse (44562121), we get a palindrome (56688665).

The spelling of 12126544 in words is "twelve million, one hundred twenty-six thousand, five hundred forty-four".