71042206 has 4 divisors (see below), whose sum is σ = 106563312. Its totient is φ = 35521102.

The previous prime is 71042171. The next prime is 71042219. The reversal of 71042206 is 60224017.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17760550 + ... + 17760553.

It is an arithmetic number, because the mean of its divisors is an integer number (26640828).

Almost surely, 2^71042206 is an apocalyptic number.

71042206 is a deficient number, since it is larger than the sum of its proper divisors (35521106).

71042206 is a wasteful number, since it uses less digits than its factorization.

71042206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35521105.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 71042206 is about 8428.6538664249. The cubic root of 71042206 is about 414.1638090903.

The spelling of 71042206 in words is "seventy-one million, forty-two thousand, two hundred six".