113442144 has 48 divisors (see below), whose sum is σ = 307399680. Its totient is φ = 36593280.

The previous prime is 113442143. The next prime is 113442151. The reversal of 113442144 is 441244311.

It is a tau number, because it is divible by the number of its divisors (48).

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113442143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16084 + ... + 22035.

It is an arithmetic number, because the mean of its divisors is an integer number (6404160).

Almost surely, 2^113442144 is an apocalyptic number.

It is an amenable number.

113442144 is an abundant number, since it is smaller than the sum of its proper divisors (193957536).

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

113442144 is a wasteful number, since it uses less digits than its factorization.

113442144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38163 (or 38155 counting only the distinct ones).

The product of its digits is 1536, while the sum is 24.

The square root of 113442144 is about 10650.9222135926. The cubic root of 113442144 is about 484.0885478772.

Adding to 113442144 its reverse (441244311), we get a palindrome (554686455).

The spelling of 113442144 in words is "one hundred thirteen million, four hundred forty-two thousand, one hundred forty-four".