123000340541520 has 320 divisors, whose sum is σ = 420691843998720. Its totient is φ = 29539325190144.

The previous prime is 123000340541509. The next prime is 123000340541527. The reversal of 123000340541520 is 25145043000321.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123000340541527) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 45161866 + ... + 47807894.

It is an arithmetic number, because the mean of its divisors is an integer number (1314662012496).

Almost surely, 2^{123000340541520} is an apocalyptic number.

123000340541520 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 123000340541520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210345921999360).

123000340541520 is an abundant number, since it is smaller than the sum of its proper divisors (297691503457200).

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

123000340541520 is a wasteful number, since it uses less digits than its factorization.

123000340541520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2646422 (or 2646416 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 123000340541520 its reverse (25145043000321), we get a palindrome (148145383541841).

The spelling of 123000340541520 in words is "one hundred twenty-three trillion, three hundred forty million, five hundred forty-one thousand, five hundred twenty".