21230595042 has 16 divisors (see below), whose sum is σ = 43608790272. Its totient is φ = 6885598320.

The previous prime is 21230594999. The next prime is 21230595091. The reversal of 21230595042 is 24059503212.

It is a junction number, because it is equal to n+sod(n) for n = 21230594994 and 21230595012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47816434 + ... + 47816877.

It is an arithmetic number, because the mean of its divisors is an integer number (2725549392).

Almost surely, 2^21230595042 is an apocalyptic number.

21230595042 is an abundant number, since it is smaller than the sum of its proper divisors (22378195230).

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

21230595042 is a wasteful number, since it uses less digits than its factorization.

21230595042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95633353.

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 21230595042 in words is "twenty-one billion, two hundred thirty million, five hundred ninety-five thousand, forty-two".