115926021 has 24 divisors (see below), whose sum is σ = 173754360. Its totient is φ = 74390400.

The previous prime is 115926007. The next prime is 115926059. The reversal of 115926021 is 120629511.

115926021 is a `hidden beast` number, since 1 + 1 + 59 + 2 + 602 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 6305121 + 109620900 = 2511^2 + 10470^2 .

It is not a de Polignac number, because 115926021 - 2⁵ = 115925989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115926001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 140791 + ... + 141611.

It is an arithmetic number, because the mean of its divisors is an integer number (7239765).

Almost surely, 2^115926021 is an apocalyptic number.

It is an amenable number.

115926021 is a deficient number, since it is larger than the sum of its proper divisors (57828339).

115926021 is a wasteful number, since it uses less digits than its factorization.

115926021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397 (or 1394 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 115926021 is about 10766.8946776682. The cubic root of 115926021 is about 487.5961971900.

The spelling of 115926021 in words is "one hundred fifteen million, nine hundred twenty-six thousand, twenty-one".