12124440 has 48 divisors (see below), whose sum is σ = 39405600. Its totient is φ = 3233088.

The previous prime is 12124423. The next prime is 12124481. The reversal of 12124440 is 4442121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16480 + ... + 17199.

It is an arithmetic number, because the mean of its divisors is an integer number (820950).

Almost surely, 2^12124440 is an apocalyptic number.

12124440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12124440 is an abundant number, since it is smaller than the sum of its proper divisors (27281160).

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

12124440 is a wasteful number, since it uses less digits than its factorization.

12124440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33696 (or 33689 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 12124440 is about 3482.0166570538. The cubic root of 12124440 is about 229.7315077415.

Adding to 12124440 its reverse (4442121), we get a palindrome (16566561).

The spelling of 12124440 in words is "twelve million, one hundred twenty-four thousand, four hundred forty".