115442140 has 48 divisors (see below), whose sum is σ = 273014784. Its totient is φ = 40622400.

The previous prime is 115442137. The next prime is 115442161. The reversal of 115442140 is 41244511.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1644 + ... + 15283.

It is an arithmetic number, because the mean of its divisors is an integer number (5687808).

Almost surely, 2^115442140 is an apocalyptic number.

115442140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115442140 is an abundant number, since it is smaller than the sum of its proper divisors (157572644).

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

115442140 is a wasteful number, since it uses less digits than its factorization.

115442140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16978 (or 16976 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 115442140 is about 10744.4004020699. The cubic root of 115442140 is about 486.9168341218.

Adding to 115442140 its reverse (41244511), we get a palindrome (156686651).

The spelling of 115442140 in words is "one hundred fifteen million, four hundred forty-two thousand, one hundred forty".