115831642 has 16 divisors (see below), whose sum is σ = 188457192. Its totient is φ = 53178880.

The previous prime is 115831627. The next prime is 115831643. The reversal of 115831642 is 246138511.

It can be written as a sum of positive squares in 4 ways, for example, as 83557881 + 32273761 = 9141^2 + 5681^2 .

It is not an unprimeable number, because it can be changed into a prime (115831643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40153 + ... + 42940.

Almost surely, 2^115831642 is an apocalyptic number.

115831642 is a deficient number, since it is larger than the sum of its proper divisors (72625550).

115831642 is a wasteful number, since it uses less digits than its factorization.

115831642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83153.

The product of its digits is 5760, while the sum is 31.

The square root of 115831642 is about 10762.5109523754. The cubic root of 115831642 is about 487.4638388255.

It can be divided in two parts, 11583 and 1642, that added together give a square (13225 = 115²).

The spelling of 115831642 in words is "one hundred fifteen million, eight hundred thirty-one thousand, six hundred forty-two".