115405142 has 4 divisors (see below), whose sum is σ = 173107716. Its totient is φ = 57702570.

The previous prime is 115405139. The next prime is 115405153. The reversal of 115405142 is 241504511.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28851284 + ... + 28851287.

It is an arithmetic number, because the mean of its divisors is an integer number (43276929).

Almost surely, 2^115405142 is an apocalyptic number.

115405142 is a deficient number, since it is larger than the sum of its proper divisors (57702574).

115405142 is an equidigital number, since it uses as much as digits as its factorization.

115405142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57702573.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 115405142 is about 10742.6785300501. The cubic root of 115405142 is about 486.8648113107.

Adding to 115405142 its reverse (241504511), we get a palindrome (356909653).

The spelling of 115405142 in words is "one hundred fifteen million, four hundred five thousand, one hundred forty-two".