442143 has 12 divisors (see below), whose sum is σ = 687960. Its totient is φ = 272016.

The previous prime is 442139. The next prime is 442147. The reversal of 442143 is 341244.

It is an interprime number because it is at equal distance from previous prime (442139) and next prime (442147).

It is not a de Polignac number, because 442143 - 2² = 442139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1773 + ... + 2006.

It is an arithmetic number, because the mean of its divisors is an integer number (57330).

2⁴⁴²¹⁴³ is an apocalyptic number.

442143 is a deficient number, since it is larger than the sum of its proper divisors (245817).

442143 is a wasteful number, since it uses less digits than its factorization.

442143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3798 (or 3795 counting only the distinct ones).

The product of its digits is 384, while the sum is 18.

The square root of 442143 is about 664.9383430063. The cubic root of 442143 is about 76.1823300008.

Adding to 442143 its reverse (341244), we get a palindrome (783387).

It can be divided in two parts, 442 and 143, that added together give a palindrome (585).

The spelling of 442143 in words is "four hundred forty-two thousand, one hundred forty-three", and thus it is an iban number.