123426929439960 has 256 divisors, whose sum is σ = 388528621608960. Its totient is φ = 31308037263360.

The previous prime is 123426929439941. The next prime is 123426929439977. The reversal of 123426929439960 is 69934929624321.

123426929439960 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 576597750 + ... + 576811770.

It is an arithmetic number, because the mean of its divisors is an integer number (1517689928160).

Almost surely, 2^{123426929439960} is an apocalyptic number.

123426929439960 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 123426929439960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194264310804480).

123426929439960 is an abundant number, since it is smaller than the sum of its proper divisors (265101692169000).

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

123426929439960 is a wasteful number, since it uses less digits than its factorization.

123426929439960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215218 (or 215214 counting only the distinct ones).

The product of its (nonzero) digits is 272097792, while the sum is 69.

The spelling of 123426929439960 in words is "one hundred twenty-three trillion, four hundred twenty-six billion, nine hundred twenty-nine million, four hundred thirty-nine thousand, nine hundred sixty".