4021444444142 has 4 divisors (see below), whose sum is σ = 6032166666216. Its totient is φ = 2010722222070.

The previous prime is 4021444444111. The next prime is 4021444444201. The reversal of 4021444444142 is 2414444441204.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 4021444444096 and 4021444444105.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1005361111034 + ... + 1005361111037.

It is an arithmetic number, because the mean of its divisors is an integer number (1508041666554).

Almost surely, 2^{4021444444142} is an apocalyptic number.

4021444444142 is a deficient number, since it is larger than the sum of its proper divisors (2010722222074).

4021444444142 is a wasteful number, since it uses less digits than its factorization.

4021444444142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2010722222073.

The product of its (nonzero) digits is 262144, while the sum is 38.

Adding to 4021444444142 its reverse (2414444441204), we get a palindrome (6435888885346).

The spelling of 4021444444142 in words is "four trillion, twenty-one billion, four hundred forty-four million, four hundred forty-four thousand, one hundred forty-two".