4021043434042 has 4 divisors (see below), whose sum is σ = 6031565151066. Its totient is φ = 2010521717020.

The previous prime is 4021043433997. The next prime is 4021043434061. The reversal of 4021043434042 is 2404343401204.

4021043434042 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.

It can be written as a sum of positive squares in only one way, i.e., 2183476120281 + 1837567313761 = 1477659^2 + 1355569^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 4021043433995 and 4021043434013.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005260858509 + ... + 1005260858512.

Almost surely, 2^{4021043434042} is an apocalyptic number.

4021043434042 is a deficient number, since it is larger than the sum of its proper divisors (2010521717024).

4021043434042 is a wasteful number, since it uses less digits than its factorization.

4021043434042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2010521717023.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 4021043434042 its reverse (2404343401204), we get a palindrome (6425386835246).

The spelling of 4021043434042 in words is "four trillion, twenty-one billion, forty-three million, four hundred thirty-four thousand, forty-two".