123172875 has 48 divisors (see below), whose sum is σ = 253775808. Its totient is φ = 56304000.

The previous prime is 123172873. The next prime is 123172909. The reversal of 123172875 is 578271321.

It is not a de Polignac number, because 123172875 - 2¹ = 123172873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123172873) 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, 55 + ... + 15695.

It is an arithmetic number, because the mean of its divisors is an integer number (5286996).

Almost surely, 2^123172875 is an apocalyptic number.

123172875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123172875 is an abundant number, since it is smaller than the sum of its proper divisors (130602933).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123172875 is a wasteful number, since it uses less digits than its factorization.

123172875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15669 (or 15656 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

The square root of 123172875 is about 11098.3275767117. The cubic root of 123172875 is about 497.5518661783.

The spelling of 123172875 in words is "one hundred twenty-three million, one hundred seventy-two thousand, eight hundred seventy-five".