442043671 has 4 divisors (see below), whose sum is σ = 442152144. Its totient is φ = 441935200.

The previous prime is 442043669. The next prime is 442043677. The reversal of 442043671 is 176340244.

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

It is a cyclic number.

It is not a de Polignac number, because 442043671 - 2¹ = 442043669 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 (442043677) 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, 47875 + ... + 56356.

It is an arithmetic number, because the mean of its divisors is an integer number (110538036).

Almost surely, 2^442043671 is an apocalyptic number.

442043671 is a deficient number, since it is larger than the sum of its proper divisors (108473).

442043671 is a wasteful number, since it uses less digits than its factorization.

442043671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108472.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 442043671 is about 21024.8346247955. The cubic root of 442043671 is about 761.7662469629.

The spelling of 442043671 in words is "four hundred forty-two million, forty-three thousand, six hundred seventy-one".