4002402042442 has 8 divisors (see below), whose sum is σ = 6004975956516. Its totient is φ = 2000743390272.

The previous prime is 4002402042421. The next prime is 4002402042493. The reversal of 4002402042442 is 2442402042004.

It can be written as a sum of positive squares in 2 ways, for example, as 3535531850601 + 466870191841 = 1880301^2 + 683279^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 4002402042442.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228804543 + ... + 228822034.

Almost surely, 2^{4002402042442} is an apocalyptic number.

4002402042442 is a deficient number, since it is larger than the sum of its proper divisors (2002573914074).

4002402042442 is a wasteful number, since it uses less digits than its factorization.

4002402042442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457630952.

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 4002402042442 its reverse (2442402042004), we get a palindrome (6444804084446).

The spelling of 4002402042442 in words is "four trillion, two billion, four hundred two million, forty-two thousand, four hundred forty-two".