442634 has 4 divisors (see below), whose sum is σ = 663954. Its totient is φ = 221316.

The previous prime is 442633. The next prime is 442691. The reversal of 442634 is 436244.

It is a happy number.

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., 418609 + 24025 = 647^2 + 155^2 .

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 as a sum of consecutive naturals, namely, 110657 + ... + 110660.

2⁴⁴²⁶³⁴ is an apocalyptic number.

442634 is a deficient number, since it is larger than the sum of its proper divisors (221320).

442634 is a wasteful number, since it uses less digits than its factorization.

442634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221319.

The product of its digits is 2304, while the sum is 23.

The square root of 442634 is about 665.3074477262. The cubic root of 442634 is about 76.2105197391.

Adding to 442634 its reverse (436244), we get a palindrome (878878).

The spelling of 442634 in words is "four hundred forty-two thousand, six hundred thirty-four".