123030142345503 has 24 divisors (see below), whose sum is σ = 177839315184960. Its totient is φ = 81960508618560.

The previous prime is 123030142345499. The next prime is 123030142345571. The reversal of 123030142345503 is 305543241030321.

123030142345503 is a `hidden beast` number, since 1 + 2 + 3 + 0 + 3 + 0 + 142 + 3 + 4 + 5 + 503 = 666.

It is not a de Polignac number, because 123030142345503 - 2² = 123030142345499 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123030142340503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 712764133 + ... + 712936721.

It is an arithmetic number, because the mean of its divisors is an integer number (7409971466040).

Almost surely, 2^{123030142345503} is an apocalyptic number.

123030142345503 is a deficient number, since it is larger than the sum of its proper divisors (54809172839457).

123030142345503 is a wasteful number, since it uses less digits than its factorization.

123030142345503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229679 (or 229676 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

Adding to 123030142345503 its reverse (305543241030321), we get a palindrome (428573383375824).

The spelling of 123030142345503 in words is "one hundred twenty-three trillion, thirty billion, one hundred forty-two million, three hundred forty-five thousand, five hundred three".