115643542 has 16 divisors (see below), whose sum is σ = 198698400. Its totient is φ = 49448448.

The previous prime is 115643527. The next prime is 115643573. The reversal of 115643542 is 245346511.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 2913 + ... + 15484.

It is an arithmetic number, because the mean of its divisors is an integer number (12418650).

Almost surely, 2^115643542 is an apocalyptic number.

115643542 is a deficient number, since it is larger than the sum of its proper divisors (83054858).

115643542 is a wasteful number, since it uses less digits than its factorization.

115643542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18855.

The product of its digits is 14400, while the sum is 31.

The square root of 115643542 is about 10753.7687347274. The cubic root of 115643542 is about 487.1998302914.

The spelling of 115643542 in words is "one hundred fifteen million, six hundred forty-three thousand, five hundred forty-two".