442822 has 4 divisors (see below), whose sum is σ = 664236. Its totient is φ = 221410.

The previous prime is 442817. The next prime is 442823. The reversal of 442822 is 228244.

442822 is nontrivially palindromic in base 16.

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

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 442793 and 442802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110704 + ... + 110707.

It is an arithmetic number, because the mean of its divisors is an integer number (166059).

2⁴⁴²⁸²² is an apocalyptic number.

442822 is a deficient number, since it is larger than the sum of its proper divisors (221414).

442822 is a wasteful number, since it uses less digits than its factorization.

442822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221413.

The product of its digits is 1024, while the sum is 22.

The square root of 442822 is about 665.4487207892. The cubic root of 442822 is about 76.2213078467.

The spelling of 442822 in words is "four hundred forty-two thousand, eight hundred twenty-two".