523405430242 has 8 divisors (see below), whose sum is σ = 785178009936. Its totient is φ = 261679426932.

The previous prime is 523405430231. The next prime is 523405430267. The reversal of 523405430242 is 242034504325.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 523405430198 and 523405430207.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11615988 + ... + 11660959.

It is an arithmetic number, because the mean of its divisors is an integer number (98147251242).

Almost surely, 2^523405430242 is an apocalyptic number.

523405430242 is a deficient number, since it is larger than the sum of its proper divisors (261772579694).

523405430242 is a wasteful number, since it uses less digits than its factorization.

523405430242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23288192.

The product of its (nonzero) digits is 115200, while the sum is 34.

Adding to 523405430242 its reverse (242034504325), we get a palindrome (765439934567).

The spelling of 523405430242 in words is "five hundred twenty-three billion, four hundred five million, four hundred thirty thousand, two hundred forty-two".