42705920806 has 4 divisors (see below), whose sum is σ = 64058881212. Its totient is φ = 21352960402.

The previous prime is 42705920797. The next prime is 42705920863. The reversal of 42705920806 is 60802950724.

42705920806 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10676480200 + ... + 10676480203.

It is an arithmetic number, because the mean of its divisors is an integer number (16014720303).

Almost surely, 2^42705920806 is an apocalyptic number.

42705920806 is a deficient number, since it is larger than the sum of its proper divisors (21352960406).

42705920806 is a wasteful number, since it uses less digits than its factorization.

42705920806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21352960405.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 42705920806 in words is "forty-two billion, seven hundred five million, nine hundred twenty thousand, eight hundred six".