123000234453440 has 112 divisors (see below), whose sum is σ = 293305938806304. Its totient is φ = 49130960486400.

The previous prime is 123000234453431. The next prime is 123000234453451. The reversal of 123000234453440 is 44354432000321.

It is a self number, because there is not a number n which added to its sum of digits gives 123000234453440.

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 15 ways as a sum of consecutive naturals, for example, 4380180200 + ... + 4380208280.

Almost surely, 2^{123000234453440} is an apocalyptic number.

123000234453440 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 123000234453440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146652969403152).

123000234453440 is an abundant number, since it is smaller than the sum of its proper divisors (170305704352864).

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

123000234453440 is a wasteful number, since it uses less digits than its factorization.

123000234453440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46846 (or 46836 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 35.

Adding to 123000234453440 its reverse (44354432000321), we get a palindrome (167354666453761).

The spelling of 123000234453440 in words is "one hundred twenty-three trillion, two hundred thirty-four million, four hundred fifty-three thousand, four hundred forty".