442243 has 2 divisors, whose sum is σ = 442244. Its totient is φ = 442242.

The previous prime is 442237. The next prime is 442271. The reversal of 442243 is 342244.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 442243.

It is not a weakly prime, because it can be changed into another prime (442283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221121 + 221122.

It is an arithmetic number, because the mean of its divisors is an integer number (221122).

2⁴⁴²²⁴³ is an apocalyptic number.

442243 is a deficient number, since it is larger than the sum of its proper divisors (1).

442243 is an equidigital number, since it uses as much as digits as its factorization.

442243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768, while the sum is 19.

The square root of 442243 is about 665.0135336969. The cubic root of 442243 is about 76.1880729835.

Adding to 442243 its reverse (342244), we get a palindrome (784487).

Subtracting from 442243 its reverse (342244), we obtain a palindrome (99999).

It can be divided in two parts, 4422 and 43, that added together give a triangular number (4465 = T₉₄).

The spelling of 442243 in words is "four hundred forty-two thousand, two hundred forty-three", and thus it is an iban number.