442843 has 2 divisors, whose sum is σ = 442844. Its totient is φ = 442842.

The previous prime is 442837. The next prime is 442861. The reversal of 442843 is 348244.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442843 is a prime.

It is a super-2 number, since 2×442843² = 392219845298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (442823) by changing a digit.

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 as a sum of consecutive naturals, namely, 221421 + 221422.

It is an arithmetic number, because the mean of its divisors is an integer number (221422).

2⁴⁴²⁸⁴³ is an apocalyptic number.

442843 is a deficient number, since it is larger than the sum of its proper divisors (1).

442843 is an equidigital number, since it uses as much as digits as its factorization.

442843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072, while the sum is 25.

The square root of 442843 is about 665.4644994288. The cubic root of 442843 is about 76.2225127117. Note that the first 3 decimals are identical.

The spelling of 442843 in words is "four hundred forty-two thousand, eight hundred forty-three".