1142021444 has 12 divisors (see below), whose sum is σ = 2116098684. Its totient is φ = 537421824.

The previous prime is 1142021437. The next prime is 1142021453. The reversal of 1142021444 is 4441202411.

It can be written as a sum of positive squares in 2 ways, for example, as 820249600 + 321771844 = 28640^2 + 17938^2 .

It is a zygodrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8397149 + ... + 8397284.

It is an arithmetic number, because the mean of its divisors is an integer number (176341557).

Almost surely, 2^1142021444 is an apocalyptic number.

It is an amenable number.

1142021444 is a deficient number, since it is larger than the sum of its proper divisors (974077240).

1142021444 is a wasteful number, since it uses less digits than its factorization.

1142021444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16794454 (or 16794452 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 1142021444 is about 33793.8077759817. The cubic root of 1142021444 is about 1045.2610152081.

Adding to 1142021444 its reverse (4441202411), we get a palindrome (5583223855).

The spelling of 1142021444 in words is "one billion, one hundred forty-two million, twenty-one thousand, four hundred forty-four".