115542403 has 4 divisors (see below), whose sum is σ = 118000800. Its totient is φ = 113084008.

The previous prime is 115542377. The next prime is 115542431. The reversal of 115542403 is 304245511.

It is a happy number.

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 115542403 - 2²¹ = 113445251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115542433) 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, 1229128 + ... + 1229221.

It is an arithmetic number, because the mean of its divisors is an integer number (29500200).

Almost surely, 2^115542403 is an apocalyptic number.

115542403 is a deficient number, since it is larger than the sum of its proper divisors (2458397).

115542403 is an equidigital number, since it uses as much as digits as its factorization.

115542403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2458396.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 115542403 is about 10749.0652151710. The cubic root of 115542403 is about 487.0577578660.

Adding to 115542403 its reverse (304245511), we get a palindrome (419787914).

The spelling of 115542403 in words is "one hundred fifteen million, five hundred forty-two thousand, four hundred three".