123043000520000 has 280 divisors, whose sum is σ = 352422678643200. Its totient is φ = 42110970880000.

The previous prime is 123043000519997. The next prime is 123043000520053. The reversal of 123043000520000 is 25000340321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 744800 + ... + 15704799.

Almost surely, 2^{123043000520000} is an apocalyptic number.

123043000520000 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 123043000520000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176211339321600).

123043000520000 is an abundant number, since it is smaller than the sum of its proper divisors (229379678123200).

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

123043000520000 is a wasteful number, since it uses less digits than its factorization.

123043000520000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16449659 (or 16449634 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 123043000520000 its reverse (25000340321), we get a palindrome (123068000860321).

The spelling of 123043000520000 in words is "one hundred twenty-three trillion, forty-three billion, five hundred twenty thousand".