822842 has 4 divisors (see below), whose sum is σ = 1234266. Its totient is φ = 411420.

The previous prime is 822839. The next prime is 822853. The reversal of 822842 is 248228.

822842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 808201 + 14641 = 899^2 + 121^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205709 + ... + 205712.

2⁸²²⁸⁴² is an apocalyptic number.

822842 is a deficient number, since it is larger than the sum of its proper divisors (411424).

822842 is a wasteful number, since it uses less digits than its factorization.

822842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411423.

The product of its digits is 2048, while the sum is 26.

The square root of 822842 is about 907.1063884683. The cubic root of 822842 is about 93.7070250441.

The spelling of 822842 in words is "eight hundred twenty-two thousand, eight hundred forty-two".