822171042 has 72 divisors (see below), whose sum is σ = 2237796288. Its totient is φ = 213546960.

The previous prime is 822171037. The next prime is 822171061. The reversal of 822171042 is 240171228.

It is a junction number, because it is equal to n+sod(n) for n = 822170997 and 822171015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 11718 + ... + 42209.

It is an arithmetic number, because the mean of its divisors is an integer number (31080504).

Almost surely, 2^822171042 is an apocalyptic number.

822171042 is an abundant number, since it is smaller than the sum of its proper divisors (1415625246).

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

822171042 is a wasteful number, since it uses less digits than its factorization.

822171042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53964 (or 53950 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 822171042 is about 28673.5251059231. The cubic root of 822171042 is about 936.8154806905.

The spelling of 822171042 in words is "eight hundred twenty-two million, one hundred seventy-one thousand, forty-two".