12442272 has 24 divisors (see below), whose sum is σ = 32661216. Its totient is φ = 4147392.

The previous prime is 12442271. The next prime is 12442273. The reversal of 12442272 is 27224421.

It is an interprime number because it is at equal distance from previous prime (12442271) and next prime (12442273).

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (12442271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64708 + ... + 64899.

It is an arithmetic number, because the mean of its divisors is an integer number (1360884).

Almost surely, 2^12442272 is an apocalyptic number.

12442272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12442272 is an abundant number, since it is smaller than the sum of its proper divisors (20218944).

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

12442272 is a wasteful number, since it uses less digits than its factorization.

12442272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129620 (or 129612 counting only the distinct ones).

The product of its digits is 1792, while the sum is 24.

The square root of 12442272 is about 3527.3604862560. The cubic root of 12442272 is about 231.7216240980.

Adding to 12442272 its reverse (27224421), we get a palindrome (39666693).

The spelling of 12442272 in words is "twelve million, four hundred forty-two thousand, two hundred seventy-two".