442042 has 4 divisors (see below), whose sum is σ = 663066. Its totient is φ = 221020.

The previous prime is 442033. The next prime is 442061. The reversal of 442042 is 240244.

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., 231361 + 210681 = 481^2 + 459^2 .

It is a super-2 number, since 2×442042² = 390802259528, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110509 + ... + 110512.

2⁴⁴²⁰⁴² is an apocalyptic number.

442042 is a deficient number, since it is larger than the sum of its proper divisors (221024).

442042 is a wasteful number, since it uses less digits than its factorization.

442042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221023.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 442042 is about 664.8623917774. The cubic root of 442042 is about 76.1765287093.

Adding to 442042 its reverse (240244), we get a palindrome (682286).

The spelling of 442042 in words is "four hundred forty-two thousand, forty-two", and thus it is an iban number.