442681805 has 16 divisors (see below), whose sum is σ = 562132224. Its totient is φ = 333970560.

The previous prime is 442681787. The next prime is 442681807. The reversal of 442681805 is 508186244.

It is a happy number.

It is not a de Polignac number, because 442681805 - 2²⁶ = 375572941 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 (442681807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18944 + ... + 35273.

It is an arithmetic number, because the mean of its divisors is an integer number (35133264).

Almost surely, 2^442681805 is an apocalyptic number.

It is an amenable number.

442681805 is a deficient number, since it is larger than the sum of its proper divisors (119450419).

442681805 is a wasteful number, since it uses less digits than its factorization.

442681805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54316.

The product of its (nonzero) digits is 61440, while the sum is 38.

The square root of 442681805 is about 21040.0048716724. The cubic root of 442681805 is about 762.1326324930.

The spelling of 442681805 in words is "four hundred forty-two million, six hundred eighty-one thousand, eight hundred five".