71057990242 has 8 divisors (see below), whose sum is σ = 106593177600. Its totient is φ = 35526931044.

The previous prime is 71057990231. The next prime is 71057990281. The reversal of 71057990242 is 24209975017.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 71057990192 and 71057990201.

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, 988642 + ... + 1058077.

It is an arithmetic number, because the mean of its divisors is an integer number (13324147200).

Almost surely, 2^71057990242 is an apocalyptic number.

71057990242 is a deficient number, since it is larger than the sum of its proper divisors (35535187358).

71057990242 is a wasteful number, since it uses less digits than its factorization.

71057990242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2064080.

The product of its (nonzero) digits is 317520, while the sum is 46.

The spelling of 71057990242 in words is "seventy-one billion, fifty-seven million, nine hundred ninety thousand, two hundred forty-two".