442003143 has 4 divisors (see below), whose sum is σ = 589337528. Its totient is φ = 294668760.

The previous prime is 442003141. The next prime is 442003153. The reversal of 442003143 is 341300244.

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

It is not a de Polignac number, because 442003143 - 2¹ = 442003141 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 (442003141) 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, 73667188 + ... + 73667193.

It is an arithmetic number, because the mean of its divisors is an integer number (147334382).

Almost surely, 2^442003143 is an apocalyptic number.

442003143 is a deficient number, since it is larger than the sum of its proper divisors (147334385).

442003143 is a wasteful number, since it uses less digits than its factorization.

442003143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147334384.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 442003143 is about 21023.8707901281. The cubic root of 442003143 is about 761.7429658499.

Adding to 442003143 its reverse (341300244), we get a palindrome (783303387).

The spelling of 442003143 in words is "four hundred forty-two million, three thousand, one hundred forty-three".