442000056 has 16 divisors (see below), whose sum is σ = 1105000200. Its totient is φ = 147333344.

The previous prime is 442000043. The next prime is 442000073. The reversal of 442000056 is 650000244.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 441999996 and 442000041.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9208311 + ... + 9208358.

Almost surely, 2^442000056 is an apocalyptic number.

It is an amenable number.

442000056 is an abundant number, since it is smaller than the sum of its proper divisors (663000144).

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

442000056 is a wasteful number, since it uses less digits than its factorization.

442000056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18416678 (or 18416674 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 442000056 is about 21023.7973734528. The cubic root of 442000056 is about 761.7411924794.

The spelling of 442000056 in words is "four hundred forty-two million, fifty-six", and thus it is an aban number.