442231 has 4 divisors (see below), whose sum is σ = 446472. Its totient is φ = 437992.

The previous prime is 442229. The next prime is 442237. The reversal of 442231 is 132244.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 442231 - 2¹ = 442229 is a prime.

It is a super-2 number, since 2×442231² = 391136514722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442237) 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, 1960 + ... + 2173.

It is an arithmetic number, because the mean of its divisors is an integer number (111618).

2⁴⁴²²³¹ is an apocalyptic number.

442231 is a deficient number, since it is larger than the sum of its proper divisors (4241).

442231 is a wasteful number, since it uses less digits than its factorization.

442231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4240.

The product of its digits is 192, while the sum is 16.

The square root of 442231 is about 665.0045112629. The cubic root of 442231 is about 76.1873838713.

Adding to 442231 its reverse (132244), we get a palindrome (574475).

The spelling of 442231 in words is "four hundred forty-two thousand, two hundred thirty-one".