115905123 has 6 divisors (see below), whose sum is σ = 167418524. Its totient is φ = 77270076.

The previous prime is 115905121. The next prime is 115905131. The reversal of 115905123 is 321509511.

115905123 is a `hidden beast` number, since 1 + 1 + 590 + 51 + 23 = 666.

It is not a de Polignac number, because 115905123 - 2¹ = 115905121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115905121) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 6439165 + ... + 6439182.

Almost surely, 2^115905123 is an apocalyptic number.

115905123 is a deficient number, since it is larger than the sum of its proper divisors (51513401).

115905123 is a wasteful number, since it uses less digits than its factorization.

115905123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12878353 (or 12878350 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 27.

The square root of 115905123 is about 10765.9241591235. The cubic root of 115905123 is about 487.5668957510.

The spelling of 115905123 in words is "one hundred fifteen million, nine hundred five thousand, one hundred twenty-three".