12144442 has 16 divisors (see below), whose sum is σ = 18727200. Its totient is φ = 5904400.

The previous prime is 12144413. The next prime is 12144463. The reversal of 12144442 is 24444121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11409 + ... + 12427.

It is an arithmetic number, because the mean of its divisors is an integer number (1170450).

Almost surely, 2^12144442 is an apocalyptic number.

12144442 is a deficient number, since it is larger than the sum of its proper divisors (6582758).

12144442 is a wasteful number, since it uses less digits than its factorization.

12144442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181.

The product of its digits is 1024, while the sum is 22.

The square root of 12144442 is about 3484.8876595954. The cubic root of 12144442 is about 229.8577696569.

Adding to 12144442 its reverse (24444121), we get a palindrome (36588563).

The spelling of 12144442 in words is "twelve million, one hundred forty-four thousand, four hundred forty-two".