12442042422 has 40 divisors (see below), whose sum is σ = 29346735000. Its totient is φ = 3929065056.

The previous prime is 12442042369. The next prime is 12442042423. The reversal of 12442042422 is 22424024421.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12442042423) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2018047 + ... + 2024202.

It is an arithmetic number, because the mean of its divisors is an integer number (733668375).

Almost surely, 2^12442042422 is an apocalyptic number.

12442042422 is an abundant number, since it is smaller than the sum of its proper divisors (16904692578).

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

12442042422 is a wasteful number, since it uses less digits than its factorization.

12442042422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4042282 (or 4042273 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 27.

Adding to 12442042422 its reverse (22424024421), we get a palindrome (34866066843).

The spelling of 12442042422 in words is "twelve billion, four hundred forty-two million, forty-two thousand, four hundred twenty-two".