12423311442 has 64 divisors (see below), whose sum is σ = 30174336000. Its totient is φ = 3771774720.

The previous prime is 12423311437. The next prime is 12423311447. The reversal of 12423311442 is 24411332421.

It is an interprime number because it is at equal distance from previous prime (12423311437) and next prime (12423311447).

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

It is not an unprimeable number, because it can be changed into a prime (12423311447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 189817 + ... + 246732.

It is an arithmetic number, because the mean of its divisors is an integer number (471474000).

Almost surely, 2^12423311442 is an apocalyptic number.

12423311442 is an abundant number, since it is smaller than the sum of its proper divisors (17751024558).

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

12423311442 is a wasteful number, since it uses less digits than its factorization.

12423311442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436608 (or 436602 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 12423311442 its reverse (24411332421), we get a palindrome (36834643863).

The spelling of 12423311442 in words is "twelve billion, four hundred twenty-three million, three hundred eleven thousand, four hundred forty-two".