115543442 has 16 divisors (see below), whose sum is σ = 198251712. Its totient is φ = 49474320.

The previous prime is 115543429. The next prime is 115543447. The reversal of 115543442 is 244345511.

It is not an unprimeable number, because it can be changed into a prime (115543447) 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 7 ways as a sum of consecutive naturals, for example, 16217 + ... + 22227.

It is an arithmetic number, because the mean of its divisors is an integer number (12390732).

Almost surely, 2^115543442 is an apocalyptic number.

115543442 is a deficient number, since it is larger than the sum of its proper divisors (82708270).

115543442 is a wasteful number, since it uses less digits than its factorization.

115543442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7393.

The product of its digits is 9600, while the sum is 29.

The square root of 115543442 is about 10749.1135448464. The cubic root of 115543442 is about 487.0592177961.

Adding to 115543442 its reverse (244345511), we get a palindrome (359888953).

The spelling of 115543442 in words is "one hundred fifteen million, five hundred forty-three thousand, four hundred forty-two".