4024442020421 has 4 divisors (see below), whose sum is σ = 4024467591552. Its totient is φ = 4024416449292.

The previous prime is 4024442020393. The next prime is 4024442020439. The reversal of 4024442020421 is 1240202444204.

It is a happy number.

4024442020421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4024442020421 - 2¹⁸ = 4024441758277 is a prime.

It is a super-2 number, since 2×4024442020421² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4024442020451) 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, 12548021 + ... + 12864746.

It is an arithmetic number, because the mean of its divisors is an integer number (1006116897888).

Almost surely, 2^{4024442020421} is an apocalyptic number.

It is an amenable number.

4024442020421 is a deficient number, since it is larger than the sum of its proper divisors (25571131).

4024442020421 is a wasteful number, since it uses less digits than its factorization.

4024442020421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25571130.

The product of its (nonzero) digits is 16384, while the sum is 29.

Adding to 4024442020421 its reverse (1240202444204), we get a palindrome (5264644464625).

The spelling of 4024442020421 in words is "four trillion, twenty-four billion, four hundred forty-two million, twenty thousand, four hundred twenty-one".