115566642 has 32 divisors (see below), whose sum is σ = 258533760. Its totient is φ = 38264400.

The previous prime is 115566623. The next prime is 115566643. The reversal of 115566642 is 246665511.

It is a junction number, because it is equal to n+sod(n) for n = 115566597 and 115566606.

It is not an unprimeable number, because it can be changed into a prime (115566643) by changing a digit.

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, 1068 + ... + 15240.

It is an arithmetic number, because the mean of its divisors is an integer number (8079180).

Almost surely, 2^115566642 is an apocalyptic number.

115566642 is an abundant number, since it is smaller than the sum of its proper divisors (142967118).

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

115566642 is a wasteful number, since it uses less digits than its factorization.

115566642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14335 (or 14329 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 115566642 is about 10750.1926494366. The cubic root of 115566642 is about 487.0918145333.

The spelling of 115566642 in words is "one hundred fifteen million, five hundred sixty-six thousand, six hundred forty-two".