123172898 has 8 divisors (see below), whose sum is σ = 189056208. Its totient is φ = 60154164.

The previous prime is 123172873. The next prime is 123172909. The reversal of 123172898 is 898271321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 716036 + ... + 716207.

It is an arithmetic number, because the mean of its divisors is an integer number (23632026).

Almost surely, 2^123172898 is an apocalyptic number.

123172898 is a deficient number, since it is larger than the sum of its proper divisors (65883310).

123172898 is a wasteful number, since it uses less digits than its factorization.

123172898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432288.

The product of its digits is 48384, while the sum is 41.

The square root of 123172898 is about 11098.3286129038. The cubic root of 123172898 is about 497.5518971475.

The spelling of 123172898 in words is "one hundred twenty-three million, one hundred seventy-two thousand, eight hundred ninety-eight".