842220885 has 64 divisors (see below), whose sum is σ = 1638558720. Its totient is φ = 364078080.

The previous prime is 842220859. The next prime is 842220889. The reversal of 842220885 is 588022248.

It is not a de Polignac number, because 842220885 - 2⁸ = 842220629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842220889) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 45394 + ... + 61196.

It is an arithmetic number, because the mean of its divisors is an integer number (25602480).

Almost surely, 2^842220885 is an apocalyptic number.

842220885 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

842220885 is a deficient number, since it is larger than the sum of its proper divisors (796337835).

842220885 is a wasteful number, since it uses less digits than its factorization.

842220885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15858.

The product of its (nonzero) digits is 81920, while the sum is 39.

The square root of 842220885 is about 29021.0421074089. The cubic root of 842220885 is about 944.3696084058.

The spelling of 842220885 in words is "eight hundred forty-two million, two hundred twenty thousand, eight hundred eighty-five".