113442140 has 48 divisors (see below), whose sum is σ = 274939392. Its totient is φ = 38511936.

The previous prime is 113442097. The next prime is 113442143. The reversal of 113442140 is 41244311.

It is a Harshad number since it is a multiple of its sum of digits (20).

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 15 ways as a sum of consecutive naturals, for example, 10487 + ... + 18353.

It is an arithmetic number, because the mean of its divisors is an integer number (5727904).

Almost surely, 2^113442140 is an apocalyptic number.

113442140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 113442140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137469696).

113442140 is an abundant number, since it is smaller than the sum of its proper divisors (161497252).

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

113442140 is a wasteful number, since it uses less digits than its factorization.

113442140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7986 (or 7984 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 113442140 is about 10650.9220258154. The cubic root of 113442140 is about 484.0885421875.

Adding to 113442140 its reverse (41244311), we get a palindrome (154686451).

The spelling of 113442140 in words is "one hundred thirteen million, four hundred forty-two thousand, one hundred forty".