123030142354534 has 4 divisors (see below), whose sum is σ = 184545213531804. Its totient is φ = 61515071177266.

The previous prime is 123030142354523. The next prime is 123030142354547. The reversal of 123030142354534 is 435453241030321.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30757535588632 + ... + 30757535588635.

It is an arithmetic number, because the mean of its divisors is an integer number (46136303382951).

Almost surely, 2^{123030142354534} is an apocalyptic number.

123030142354534 is a deficient number, since it is larger than the sum of its proper divisors (61515071177270).

123030142354534 is an equidigital number, since it uses as much as digits as its factorization.

123030142354534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61515071177269.

The product of its (nonzero) digits is 518400, while the sum is 40.

Adding to 123030142354534 its reverse (435453241030321), we get a palindrome (558483383384855).

The spelling of 123030142354534 in words is "one hundred twenty-three trillion, thirty billion, one hundred forty-two million, three hundred fifty-four thousand, five hundred thirty-four".