442042444404 has 72 divisors (see below), whose sum is σ = 1251910584288. Its totient is φ = 130331920320.

The previous prime is 442042444397. The next prime is 442042444429. The reversal of 442042444404 is 404444240244.

442042444404 is a `hidden beast` number, since 4 + 4 + 2 + 0 + 4 + 244 + 4 + 404 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15070062 + ... + 15099365.

It is an arithmetic number, because the mean of its divisors is an integer number (17387647004).

Almost surely, 2^442042444404 is an apocalyptic number.

442042444404 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

442042444404 is an abundant number, since it is smaller than the sum of its proper divisors (809868139884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442042444404 is a wasteful number, since it uses less digits than its factorization.

442042444404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30169485 (or 30169480 counting only the distinct ones).

The product of its (nonzero) digits is 262144, while the sum is 36.

Adding to 442042444404 its reverse (404444240244), we get a palindrome (846486684648).

It can be divided in two parts, 442042 and 444404, that added together give a triangular number (886446 = T₁₃₃₁).

The spelling of 442042444404 in words is "four hundred forty-two billion, forty-two million, four hundred forty-four thousand, four hundred four".