2001442443 has 64 divisors (see below), whose sum is σ = 3680044032. Its totient is φ = 933742080.

The previous prime is 2001442441. The next prime is 2001442483. The reversal of 2001442443 is 3442441002.

It is a happy number.

It is not a de Polignac number, because 2001442443 - 2¹ = 2001442441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2001442441) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 102105 + ... + 120117.

It is an arithmetic number, because the mean of its divisors is an integer number (57500688).

Almost surely, 2^2001442443 is an apocalyptic number.

2001442443 is a deficient number, since it is larger than the sum of its proper divisors (1678601589).

2001442443 is a wasteful number, since it uses less digits than its factorization.

2001442443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18084.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 2001442443 is about 44737.4836462669. The cubic root of 2001442443 is about 1260.2238711560.

Adding to 2001442443 its reverse (3442441002), we get a palindrome (5443883445).

It can be divided in two parts, 2001 and 442443, that added together give a palindrome (444444).

The spelling of 2001442443 in words is "two billion, one million, four hundred forty-two thousand, four hundred forty-three".