123115875 has 32 divisors (see below), whose sum is σ = 211947840. Its totient is φ = 63392000.

The previous prime is 123115871. The next prime is 123115897. The reversal of 123115875 is 578511321.

It is not a de Polignac number, because 123115875 - 2² = 123115871 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123115871) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5215 + ... + 16535.

It is an arithmetic number, because the mean of its divisors is an integer number (6623370).

Almost surely, 2^123115875 is an apocalyptic number.

123115875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123115875 is a deficient number, since it is larger than the sum of its proper divisors (88831965).

123115875 is a wasteful number, since it uses less digits than its factorization.

123115875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11368 (or 11358 counting only the distinct ones).

The product of its digits is 8400, while the sum is 33.

The square root of 123115875 is about 11095.7593250755. The cubic root of 123115875 is about 497.4751046017.

The spelling of 123115875 in words is "one hundred twenty-three million, one hundred fifteen thousand, eight hundred seventy-five".