42003444011 has 4 divisors (see below), whose sum is σ = 42034172112. Its totient is φ = 41972715912.

The previous prime is 42003443947. The next prime is 42003444073. The reversal of 42003444011 is 11044430024.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 42003444011 - 2⁶ = 42003443947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42003444611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15362000 + ... + 15364733.

It is an arithmetic number, because the mean of its divisors is an integer number (10508543028).

Almost surely, 2^42003444011 is an apocalyptic number.

42003444011 is a deficient number, since it is larger than the sum of its proper divisors (30728101).

42003444011 is a wasteful number, since it uses less digits than its factorization.

42003444011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30728100.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 42003444011 its reverse (11044430024), we get a palindrome (53047874035).

The spelling of 42003444011 in words is "forty-two billion, three million, four hundred forty-four thousand, eleven".