442643341 has 4 divisors (see below), whose sum is σ = 505878112. Its totient is φ = 379408572.

The previous prime is 442643293. The next prime is 442643347. The reversal of 442643341 is 143346244.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 442643341 - 2¹¹ = 442641293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442643347) 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, 31617375 + ... + 31617388.

It is an arithmetic number, because the mean of its divisors is an integer number (126469528).

Almost surely, 2^442643341 is an apocalyptic number.

It is an amenable number.

442643341 is a deficient number, since it is larger than the sum of its proper divisors (63234771).

442643341 is an equidigital number, since it uses as much as digits as its factorization.

442643341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63234770.

The product of its digits is 27648, while the sum is 31.

The square root of 442643341 is about 21039.0907835866. The cubic root of 442643341 is about 762.1105583091.

Adding to 442643341 its reverse (143346244), we get a palindrome (585989585).

The spelling of 442643341 in words is "four hundred forty-two million, six hundred forty-three thousand, three hundred forty-one".