42523430123 has 4 divisors (see below), whose sum is σ = 42523948248. Its totient is φ = 42522912000.

The previous prime is 42523430113. The next prime is 42523430129. The reversal of 42523430123 is 32103432524.

It is a happy number.

42523430123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 42523430123 - 2⁸ = 42523429867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42523430129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105686 + ... + 310187.

It is an arithmetic number, because the mean of its divisors is an integer number (10630987062).

Almost surely, 2^42523430123 is an apocalyptic number.

42523430123 is a deficient number, since it is larger than the sum of its proper divisors (518125).

42523430123 is a wasteful number, since it uses less digits than its factorization.

42523430123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518124.

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 42523430123 its reverse (32103432524), we get a palindrome (74626862647).

The spelling of 42523430123 in words is "forty-two billion, five hundred twenty-three million, four hundred thirty thousand, one hundred twenty-three".