4042431220242 has 32 divisors (see below), whose sum is σ = 8088881503680. Its totient is φ = 1346807404800.

The previous prime is 4042431220237. The next prime is 4042431220249. The reversal of 4042431220242 is 2420221342404.

It is a happy number.

4042431220242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×4042431220242² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4042431220249) 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, 116381934 + ... + 116416662.

It is an arithmetic number, because the mean of its divisors is an integer number (252777546990).

Almost surely, 2^{4042431220242} is an apocalyptic number.

4042431220242 is an abundant number, since it is smaller than the sum of its proper divisors (4046450283438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4042431220242 is a wasteful number, since it uses less digits than its factorization.

4042431220242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43818.

The product of its (nonzero) digits is 24576, while the sum is 30.

Adding to 4042431220242 its reverse (2420221342404), we get a palindrome (6462652562646).

The spelling of 4042431220242 in words is "four trillion, forty-two billion, four hundred thirty-one million, two hundred twenty thousand, two hundred forty-two".