42857909799 has 4 divisors (see below), whose sum is σ = 57143879736. Its totient is φ = 28571939864.

The previous prime is 42857909777. The next prime is 42857909849. The reversal of 42857909799 is 99790975824.

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

It is a cyclic number.

It is not a de Polignac number, because 42857909799 - 2¹¹ = 42857907751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42857959799) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7142984964 + ... + 7142984969.

It is an arithmetic number, because the mean of its divisors is an integer number (14285969934).

Almost surely, 2^42857909799 is an apocalyptic number.

42857909799 is a deficient number, since it is larger than the sum of its proper divisors (14285969937).

42857909799 is a wasteful number, since it uses less digits than its factorization.

42857909799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14285969936.

The product of its (nonzero) digits is 102876480, while the sum is 69.

The spelling of 42857909799 in words is "forty-two billion, eight hundred fifty-seven million, nine hundred nine thousand, seven hundred ninety-nine".