523123005420 has 72 divisors (see below), whose sum is σ = 1587061803600. Its totient is φ = 139477019520.

The previous prime is 523123005407. The next prime is 523123005443. The reversal of 523123005420 is 24500321325.

It is a happy number.

523123005420 is a `hidden beast` number, since 5 + 2 + 3 + 1 + 230 + 0 + 5 + 420 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 903130 + ... + 1364510.

It is an arithmetic number, because the mean of its divisors is an integer number (22042525050).

Almost surely, 2^523123005420 is an apocalyptic number.

It is an amenable number.

523123005420 is an abundant number, since it is smaller than the sum of its proper divisors (1063938798180).

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

523123005420 is a wasteful number, since it uses less digits than its factorization.

523123005420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467695 (or 467690 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 523123005420 its reverse (24500321325), we get a palindrome (547623326745).

The spelling of 523123005420 in words is "five hundred twenty-three billion, one hundred twenty-three million, five thousand, four hundred twenty".