115613442 has 72 divisors (see below), whose sum is σ = 306774000. Its totient is φ = 31289328.

The previous prime is 115613383. The next prime is 115613453. The reversal of 115613442 is 244316511.

It is a happy number.

115613442 is a `hidden beast` number, since 1 + 1 + 5 + 613 + 4 + 42 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 13309 + ... + 20207.

It is an arithmetic number, because the mean of its divisors is an integer number (4260750).

Almost surely, 2^115613442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115613442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153387000).

115613442 is an abundant number, since it is smaller than the sum of its proper divisors (191160558).

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

115613442 is a wasteful number, since it uses less digits than its factorization.

115613442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6940 (or 6930 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 115613442 is about 10752.3691342885. The cubic root of 115613442 is about 487.1575567465.

Adding to 115613442 its reverse (244316511), we get a palindrome (359929953).

The spelling of 115613442 in words is "one hundred fifteen million, six hundred thirteen thousand, four hundred forty-two".