442004143 has 8 divisors (see below), whose sum is σ = 505497888. Its totient is φ = 378597984.

The previous prime is 442004137. The next prime is 442004203. The reversal of 442004143 is 341400244.

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

It is a cyclic number.

It is not a de Polignac number, because 442004143 - 2¹³ = 441995951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442004113) 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, 10696 + ... + 31597.

It is an arithmetic number, because the mean of its divisors is an integer number (63187236).

Almost surely, 2^442004143 is an apocalyptic number.

442004143 is a deficient number, since it is larger than the sum of its proper divisors (63493745).

442004143 is a wasteful number, since it uses less digits than its factorization.

442004143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43793.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 442004143 is about 21023.8945726048. The cubic root of 442004143 is about 761.7435403122.

Adding to 442004143 its reverse (341400244), we get a palindrome (783404387).

The spelling of 442004143 in words is "four hundred forty-two million, four thousand, one hundred forty-three".