443642 has 8 divisors (see below), whose sum is σ = 688500. Its totient is φ = 214144.

The previous prime is 443629. The next prime is 443659. The reversal of 443642 is 246344.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 410881 + 32761 = 641^2 + 181^2 .

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

It is an unprimeable number.

443642 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3767 + ... + 3882.

2⁴⁴³⁶⁴² is an apocalyptic number.

443642 is a deficient number, since it is larger than the sum of its proper divisors (244858).

443642 is a wasteful number, since it uses less digits than its factorization.

443642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7680.

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

The square root of 443642 is about 666.0645614353. The cubic root of 443642 is about 76.2683266886.

Adding to 443642 its reverse (246344), we get a palindrome (689986).

The spelling of 443642 in words is "four hundred forty-three thousand, six hundred forty-two".