123230140105500 has 288 divisors, whose sum is σ = 405856001416320. Its totient is φ = 31416822835200.

The previous prime is 123230140105481. The next prime is 123230140105543. The reversal of 123230140105500 is 5501041032321.

123230140105500 is a `hidden beast` number, since 1 + 2 + 3 + 2 + 3 + 0 + 140 + 10 + 5 + 500 = 666.

It is a super-2 number, since 2×123230140105500² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 206391396 + ... + 206987604.

It is an arithmetic number, because the mean of its divisors is an integer number (1409222227140).

Almost surely, 2^{123230140105500} is an apocalyptic number.

123230140105500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123230140105500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202928000708160).

123230140105500 is an abundant number, since it is smaller than the sum of its proper divisors (282625861310820).

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

123230140105500 is a wasteful number, since it uses less digits than its factorization.

123230140105500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598254 (or 598239 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 123230140105500 its reverse (5501041032321), we get a palindrome (128731181137821).

The spelling of 123230140105500 in words is "one hundred twenty-three trillion, two hundred thirty billion, one hundred forty million, one hundred five thousand, five hundred".