2042440221 has 16 divisors (see below), whose sum is σ = 2737425600. Its totient is φ = 1354560768.

The previous prime is 2042440201. The next prime is 2042440223. The reversal of 2042440221 is 1220442402.

It is not a de Polignac number, because 2042440221 - 2⁶ = 2042440157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2042440223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 486885 + ... + 491061.

It is an arithmetic number, because the mean of its divisors is an integer number (171089100).

Almost surely, 2^2042440221 is an apocalyptic number.

It is an amenable number.

2042440221 is a deficient number, since it is larger than the sum of its proper divisors (694985379).

2042440221 is a wasteful number, since it uses less digits than its factorization.

2042440221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4988.

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 2042440221 is about 45193.3647895352. The cubic root of 2042440221 is about 1268.7706335680.

Adding to 2042440221 its reverse (1220442402), we get a palindrome (3262882623).

The spelling of 2042440221 in words is "two billion, forty-two million, four hundred forty thousand, two hundred twenty-one".