443542 has 8 divisors (see below), whose sum is σ = 725832. Its totient is φ = 201600.

The previous prime is 443533. The next prime is 443543. The reversal of 443542 is 245344.

It is a happy number.

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

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 20161 = 443542 / (4 + 4 + 3 + 5 + 4 + 2).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (443543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10059 + ... + 10102.

It is an arithmetic number, because the mean of its divisors is an integer number (90729).

2⁴⁴³⁵⁴² is an apocalyptic number.

443542 is a deficient number, since it is larger than the sum of its proper divisors (282290).

443542 is a wasteful number, since it uses less digits than its factorization.

443542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20174.

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

The square root of 443542 is about 665.9894894066. The cubic root of 443542 is about 76.2625957871.

Adding to 443542 its reverse (245344), we get a palindrome (688886).

The spelling of 443542 in words is "four hundred forty-three thousand, five hundred forty-two".