442347 has 4 divisors (see below), whose sum is σ = 589800. Its totient is φ = 294896.

The previous prime is 442333. The next prime is 442363. The reversal of 442347 is 743244.

442347 is nontrivially palindromic in base 2.

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 442347 - 2⁶ = 442283 is a prime.

It is a D-number.

442347 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (442327) 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, 73722 + ... + 73727.

It is an arithmetic number, because the mean of its divisors is an integer number (147450).

2⁴⁴²³⁴⁷ is an apocalyptic number.

442347 is a deficient number, since it is larger than the sum of its proper divisors (147453).

442347 is a wasteful number, since it uses less digits than its factorization.

442347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147452.

The product of its digits is 2688, while the sum is 24.

The square root of 442347 is about 665.0917229977. The cubic root of 442347 is about 76.1940447671.

The spelling of 442347 in words is "four hundred forty-two thousand, three hundred forty-seven", and thus it is an iban number.