12126444 has 24 divisors (see below), whose sum is σ = 30867648. Its totient is φ = 3674640.

The previous prime is 12126419. The next prime is 12126449. The reversal of 12126444 is 44462121.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (12126449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45802 + ... + 46065.

It is an arithmetic number, because the mean of its divisors is an integer number (1286152).

Almost surely, 2^12126444 is an apocalyptic number.

It is an amenable number.

12126444 is an abundant number, since it is smaller than the sum of its proper divisors (18741204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12126444 is a wasteful number, since it uses less digits than its factorization.

12126444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91885 (or 91883 counting only the distinct ones).

The product of its digits is 1536, while the sum is 24.

The square root of 12126444 is about 3482.3044094392. The cubic root of 12126444 is about 229.7441641770.

Adding to 12126444 its reverse (44462121), we get a palindrome (56588565).

It can be divided in two parts, 121 and 26444, that added together give a triangular number (26565 = T₂₃₀).

The spelling of 12126444 in words is "twelve million, one hundred twenty-six thousand, four hundred forty-four".