123030245132540 has 96 divisors (see below), whose sum is σ = 261848651400000. Its totient is φ = 48550771095552.

The previous prime is 123030245132497. The next prime is 123030245132549. The reversal of 123030245132540 is 45231542030321.

It is a self number, because there is not a number n which added to its sum of digits gives 123030245132540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123030245132549) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4807922066 + ... + 4807947654.

It is an arithmetic number, because the mean of its divisors is an integer number (2727590118750).

Almost surely, 2^{123030245132540} is an apocalyptic number.

123030245132540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123030245132540 is an abundant number, since it is smaller than the sum of its proper divisors (138818406267460).

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

123030245132540 is a wasteful number, since it uses less digits than its factorization.

123030245132540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31599 (or 31597 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 123030245132540 its reverse (45231542030321), we get a palindrome (168261787162861).

The spelling of 123030245132540 in words is "one hundred twenty-three trillion, thirty billion, two hundred forty-five million, one hundred thirty-two thousand, five hundred forty".