115421215 has 64 divisors (see below), whose sum is σ = 180633600. Its totient is φ = 70277760.

The previous prime is 115421209. The next prime is 115421231. The reversal of 115421215 is 512124511.

It is not a de Polignac number, because 115421215 - 2⁵ = 115421183 is a prime.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 691062 + ... + 691228.

It is an arithmetic number, because the mean of its divisors is an integer number (2822400).

Almost surely, 2^115421215 is an apocalyptic number.

115421215 is a deficient number, since it is larger than the sum of its proper divisors (65212385).

115421215 is a wasteful number, since it uses less digits than its factorization.

115421215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237 (or 223 counting only the distinct ones).

The product of its digits is 400, while the sum is 22.

The square root of 115421215 is about 10743.4265948998. The cubic root of 115421215 is about 486.8874128884.

Adding to 115421215 its reverse (512124511), we get a palindrome (627545726).

The spelling of 115421215 in words is "one hundred fifteen million, four hundred twenty-one thousand, two hundred fifteen".