40442021003 has 4 divisors (see below), whose sum is σ = 40611234720. Its totient is φ = 40272807288.

The previous prime is 40442020967. The next prime is 40442021029. The reversal of 40442021003 is 30012024404.

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 40442021003 - 2⁶ = 40442020939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40442021033) 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, 84606500 + ... + 84606977.

It is an arithmetic number, because the mean of its divisors is an integer number (10152808680).

Almost surely, 2^40442021003 is an apocalyptic number.

40442021003 is a deficient number, since it is larger than the sum of its proper divisors (169213717).

40442021003 is a wasteful number, since it uses less digits than its factorization.

40442021003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169213716.

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

Adding to 40442021003 its reverse (30012024404), we get a palindrome (70454045407).

The spelling of 40442021003 in words is "forty billion, four hundred forty-two million, twenty-one thousand, three".