4042440420443 has 4 divisors (see below), whose sum is σ = 4062754191600. Its totient is φ = 4022126649288.

The previous prime is 4042440420401. The next prime is 4042440420457. The reversal of 4042440420443 is 3440240442404.

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 4042440420443 - 2¹⁴ = 4042440404059 is a prime.

It is a super-2 number, since 2×4042440420443² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4042440422443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10156885280 + ... + 10156885677.

It is an arithmetic number, because the mean of its divisors is an integer number (1015688547900).

Almost surely, 2^{4042440420443} is an apocalyptic number.

4042440420443 is a deficient number, since it is larger than the sum of its proper divisors (20313771157).

4042440420443 is a wasteful number, since it uses less digits than its factorization.

4042440420443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20313771156.

The product of its (nonzero) digits is 196608, while the sum is 35.

Adding to 4042440420443 its reverse (3440240442404), we get a palindrome (7482680862847).

The spelling of 4042440420443 in words is "four trillion, forty-two billion, four hundred forty million, four hundred twenty thousand, four hundred forty-three".