12442172 has 12 divisors (see below), whose sum is σ = 22720656. Its totient is φ = 5950560.

The previous prime is 12442163. The next prime is 12442201. The reversal of 12442172 is 27124421.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67529 + ... + 67712.

It is an arithmetic number, because the mean of its divisors is an integer number (1893388).

Almost surely, 2^12442172 is an apocalyptic number.

It is an amenable number.

12442172 is a deficient number, since it is larger than the sum of its proper divisors (10278484).

12442172 is a wasteful number, since it uses less digits than its factorization.

12442172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135268 (or 135266 counting only the distinct ones).

The product of its digits is 896, while the sum is 23.

The square root of 12442172 is about 3527.3463113224. The cubic root of 12442172 is about 231.7210033050.

Adding to 12442172 its reverse (27124421), we get a palindrome (39566593).

The spelling of 12442172 in words is "twelve million, four hundred forty-two thousand, one hundred seventy-two".