442481871 has 8 divisors (see below), whose sum is σ = 635358640. Its totient is φ = 272296512.

The previous prime is 442481857. The next prime is 442481891. The reversal of 442481871 is 178184244.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 442481871 - 2⁵ = 442481839 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 11345689 = 442481871 / (4 + 4 + 2 + 4 + 8 + 1 + 8 + 7 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442481801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5672806 + ... + 5672883.

It is an arithmetic number, because the mean of its divisors is an integer number (79419830).

Almost surely, 2^442481871 is an apocalyptic number.

442481871 is a deficient number, since it is larger than the sum of its proper divisors (192876769).

442481871 is a wasteful number, since it uses less digits than its factorization.

442481871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11345705.

The product of its digits is 57344, while the sum is 39.

The square root of 442481871 is about 21035.2530529110. The cubic root of 442481871 is about 762.0178780052.

The spelling of 442481871 in words is "four hundred forty-two million, four hundred eighty-one thousand, eight hundred seventy-one".