7982821042 has 16 divisors (see below), whose sum is σ = 13805943552. Its totient is φ = 3390932160.

The previous prime is 7982821001. The next prime is 7982821057. The reversal of 7982821042 is 2401282897.

It is a self number, because there is not a number n which added to its sum of digits gives 7982821042.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2521434 + ... + 2524597.

It is an arithmetic number, because the mean of its divisors is an integer number (862871472).

Almost surely, 2^7982821042 is an apocalyptic number.

7982821042 is a deficient number, since it is larger than the sum of its proper divisors (5823122510).

7982821042 is a wasteful number, since it uses less digits than its factorization.

7982821042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5046153.

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 7982821042 is about 89346.6341951391. The cubic root of 7982821042 is about 1998.5673942320.

The spelling of 7982821042 in words is "seven billion, nine hundred eighty-two million, eight hundred twenty-one thousand, forty-two".