842406311805 has 16 divisors (see below), whose sum is σ = 1391329135104. Its totient is φ = 434790354240.

The previous prime is 842406311771. The next prime is 842406311861. The reversal of 842406311805 is 508113604248.

It is a happy number.

842406311805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 842406311805 - 2¹¹ = 842406309757 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 905812774 + ... + 905813703.

It is an arithmetic number, because the mean of its divisors is an integer number (86958070944).

Almost surely, 2^842406311805 is an apocalyptic number.

It is an amenable number.

842406311805 is a deficient number, since it is larger than the sum of its proper divisors (548922823299).

842406311805 is a wasteful number, since it uses less digits than its factorization.

842406311805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1811626516.

The product of its (nonzero) digits is 184320, while the sum is 42.

The spelling of 842406311805 in words is "eight hundred forty-two billion, four hundred six million, three hundred eleven thousand, eight hundred five".