442622 has 4 divisors (see below), whose sum is σ = 663936. Its totient is φ = 221310.

The previous prime is 442619. The next prime is 442633. The reversal of 442622 is 226244.

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

It is a junction number, because it is equal to n+sod(n) for n = 442594 and 442603.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 110654 + ... + 110657.

It is an arithmetic number, because the mean of its divisors is an integer number (165984).

2⁴⁴²⁶²² is an apocalyptic number.

442622 is a deficient number, since it is larger than the sum of its proper divisors (221314).

442622 is a wasteful number, since it uses less digits than its factorization.

442622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221313.

The product of its digits is 768, while the sum is 20.

The square root of 442622 is about 665.2984292782. The cubic root of 442622 is about 76.2098310327.

Adding to 442622 its reverse (226244), we get a palindrome (668866).

The spelling of 442622 in words is "four hundred forty-two thousand, six hundred twenty-two".