442000871 has 4 divisors (see below), whose sum is σ = 476000952. Its totient is φ = 408000792.

The previous prime is 442000859. The next prime is 442000873. The reversal of 442000871 is 178000244.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442000871 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 442000871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442000873) 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, 17000021 + ... + 17000046.

It is an arithmetic number, because the mean of its divisors is an integer number (119000238).

Almost surely, 2^442000871 is an apocalyptic number.

442000871 is a deficient number, since it is larger than the sum of its proper divisors (34000081).

442000871 is a wasteful number, since it uses less digits than its factorization.

442000871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34000080.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 442000871 is about 21023.8167562410. The cubic root of 442000871 is about 761.7416606684.

The spelling of 442000871 in words is "four hundred forty-two million, eight hundred seventy-one", and thus it is an aban number.