115542143 has 4 divisors (see below), whose sum is σ = 115567320. Its totient is φ = 115516968.

The previous prime is 115542127. The next prime is 115542151. The reversal of 115542143 is 341245511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 115542143 - 2⁴ = 115542127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115542043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3533 + ... + 15606.

It is an arithmetic number, because the mean of its divisors is an integer number (28891830).

Almost surely, 2^115542143 is an apocalyptic number.

115542143 is a deficient number, since it is larger than the sum of its proper divisors (25177).

115542143 is an equidigital number, since it uses as much as digits as its factorization.

115542143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25176.

The product of its digits is 2400, while the sum is 26.

The square root of 115542143 is about 10749.0531210893. The cubic root of 115542143 is about 487.0573925308.

Adding to 115542143 its reverse (341245511), we get a palindrome (456787654).

The spelling of 115542143 in words is "one hundred fifteen million, five hundred forty-two thousand, one hundred forty-three".