4042424242442 has 8 divisors (see below), whose sum is σ = 6146699875716. Its totient is φ = 1993524283872.

The previous prime is 4042424242387. The next prime is 4042424242447. The reversal of 4042424242442 is 2442424242404.

It can be written as a sum of positive squares in 2 ways, for example, as 3951750385801 + 90673856641 = 1987901^2 + 301121^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 4042424242396 and 4042424242405.

It is not an unprimeable number, because it can be changed into a prime (4042424242447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13843918493 + ... + 13843918784.

Almost surely, 2^{4042424242442} is an apocalyptic number.

4042424242442 is a deficient number, since it is larger than the sum of its proper divisors (2104275633274).

4042424242442 is a wasteful number, since it uses less digits than its factorization.

4042424242442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27687837352.

The product of its (nonzero) digits is 524288, while the sum is 38.

Subtracting from 4042424242442 its sum of digits (38), we obtain a palindrome (4042424242404).

Adding to 4042424242442 its reverse (2442424242404), we get a palindrome (6484848484846).

The spelling of 4042424242442 in words is "four trillion, forty-two billion, four hundred twenty-four million, two hundred forty-two thousand, four hundred forty-two".