442543 has 8 divisors (see below), whose sum is σ = 470016. Its totient is φ = 415800.

The previous prime is 442537. The next prime is 442571. The reversal of 442543 is 345244.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 442543 - 2⁹ = 442031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1498 + ... + 1768.

It is an arithmetic number, because the mean of its divisors is an integer number (58752).

2⁴⁴²⁵⁴³ is an apocalyptic number.

442543 is a deficient number, since it is larger than the sum of its proper divisors (27473).

442543 is a wasteful number, since it uses less digits than its factorization.

442543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365.

The product of its digits is 1920, while the sum is 22.

The square root of 442543 is about 665.2390547766. The cubic root of 442543 is about 76.2052967387.

Adding to 442543 its reverse (345244), we get a palindrome (787787).

The spelling of 442543 in words is "four hundred forty-two thousand, five hundred forty-three".