442002143 has 8 divisors (see below), whose sum is σ = 482636880. Its totient is φ = 401442880.

The previous prime is 442002133. The next prime is 442002151. The reversal of 442002143 is 341200244.

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 442002143 - 2¹⁸ = 441739999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442002103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6248 + ... + 30381.

It is an arithmetic number, because the mean of its divisors is an integer number (60329610).

Almost surely, 2^442002143 is an apocalyptic number.

442002143 is a deficient number, since it is larger than the sum of its proper divisors (40634737).

442002143 is a wasteful number, since it uses less digits than its factorization.

442002143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37737.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 442002143 is about 21023.8470076245. The cubic root of 442002143 is about 761.7423913868.

Adding to 442002143 its reverse (341200244), we get a palindrome (783202387).

The spelling of 442002143 in words is "four hundred forty-two million, two thousand, one hundred forty-three".