12444142 has 4 divisors (see below), whose sum is σ = 18666216. Its totient is φ = 6222070.

The previous prime is 12444139. The next prime is 12444163. The reversal of 12444142 is 24144421.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3111034 + ... + 3111037.

It is an arithmetic number, because the mean of its divisors is an integer number (4666554).

Almost surely, 2^12444142 is an apocalyptic number.

12444142 is a deficient number, since it is larger than the sum of its proper divisors (6222074).

12444142 is an equidigital number, since it uses as much as digits as its factorization.

12444142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6222073.

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

The square root of 12444142 is about 3527.6255470217. The cubic root of 12444142 is about 231.7332323136.

Adding to 12444142 its reverse (24144421), we get a palindrome (36588563).

The spelling of 12444142 in words is "twelve million, four hundred forty-four thousand, one hundred forty-two".