842256203129 has 16 divisors (see below), whose sum is σ = 974014191360. Its totient is φ = 719802044160.

The previous prime is 842256203119. The next prime is 842256203141. The reversal of 842256203129 is 921302652248.

842256203129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 842256203129 - 2²⁰ = 842255154553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 842256203129.

It is not an unprimeable number, because it can be changed into a prime (842256203119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2480609 + ... + 2799630.

It is an arithmetic number, because the mean of its divisors is an integer number (60875886960).

Almost surely, 2^842256203129 is an apocalyptic number.

It is an amenable number.

842256203129 is a deficient number, since it is larger than the sum of its proper divisors (131757988231).

842256203129 is a wasteful number, since it uses less digits than its factorization.

842256203129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5281120.

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 842256203129 in words is "eight hundred forty-two billion, two hundred fifty-six million, two hundred three thousand, one hundred twenty-nine".