123388950 has 48 divisors (see below), whose sum is σ = 307011600. Its totient is φ = 32795520.

The previous prime is 123388943. The next prime is 123388961. The reversal of 123388950 is 59883321.

It is a junction number, because it is equal to n+sod(n) for n = 123388899 and 123388908.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 51172 + ... + 53528.

It is an arithmetic number, because the mean of its divisors is an integer number (6396075).

Almost surely, 2^123388950 is an apocalyptic number.

123388950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 123388950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153505800).

123388950 is an abundant number, since it is smaller than the sum of its proper divisors (183622650).

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

123388950 is a wasteful number, since it uses less digits than its factorization.

123388950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2721 (or 2716 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 123388950 is about 11108.0578860573. The cubic root of 123388950 is about 497.8426383021.

The spelling of 123388950 in words is "one hundred twenty-three million, three hundred eighty-eight thousand, nine hundred fifty".