442630 has 8 divisors (see below), whose sum is σ = 796752. Its totient is φ = 177048.

The previous prime is 442619. The next prime is 442633. The reversal of 442630 is 36244.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 442598 and 442607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22122 + ... + 22141.

It is an arithmetic number, because the mean of its divisors is an integer number (99594).

2⁴⁴²⁶³⁰ is an apocalyptic number.

442630 is a deficient number, since it is larger than the sum of its proper divisors (354122).

442630 is a wasteful number, since it uses less digits than its factorization.

442630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44270.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 442630 is about 665.3044415905. The cubic root of 442630 is about 76.2102901717.

Adding to 442630 its reverse (36244), we get a palindrome (478874).

The spelling of 442630 in words is "four hundred forty-two thousand, six hundred thirty".