123230550 has 72 divisors (see below), whose sum is σ = 319682664. Its totient is φ = 31412480.

The previous prime is 123230533. The next prime is 123230563. The reversal of 123230550 is 55032321.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 78574 + ... + 80126.

It is an arithmetic number, because the mean of its divisors is an integer number (4440037).

Almost surely, 2^123230550 is an apocalyptic number.

123230550 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 123230550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159841332).

123230550 is an abundant number, since it is smaller than the sum of its proper divisors (196452114).

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

123230550 is a wasteful number, since it uses less digits than its factorization.

123230550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1614 (or 1586 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 123230550 is about 11100.9256370809. The cubic root of 123230550 is about 497.6295126734.

Adding to 123230550 its reverse (55032321), we get a palindrome (178262871).

The spelling of 123230550 in words is "one hundred twenty-three million, two hundred thirty thousand, five hundred fifty".