115942491 has 48 divisors (see below), whose sum is σ = 197976064. Its totient is φ = 64012032.

The previous prime is 115942487. The next prime is 115942501. The reversal of 115942491 is 194249511.

It is a happy number.

It is not a de Polignac number, because 115942491 - 2² = 115942487 is a prime.

It is a super-2 number, since 2×115942491² = 26885322438570162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115942291) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 343875 + ... + 344211.

Almost surely, 2^115942491 is an apocalyptic number.

115942491 is a deficient number, since it is larger than the sum of its proper divisors (82033573).

115942491 is a wasteful number, since it uses less digits than its factorization.

115942491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520 (or 517 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 115942491 is about 10767.6594949878. The cubic root of 115942491 is about 487.6192875741.

The spelling of 115942491 in words is "one hundred fifteen million, nine hundred forty-two thousand, four hundred ninety-one".