809714542 has 32 divisors (see below), whose sum is σ = 1496779200. Its totient is φ = 319915008.

The previous prime is 809714527. The next prime is 809714569. The reversal of 809714542 is 245417908.

It is a junction number, because it is equal to n+sod(n) for n = 809714495 and 809714504.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166684 + ... + 171472.

It is an arithmetic number, because the mean of its divisors is an integer number (46774350).

Almost surely, 2^809714542 is an apocalyptic number.

809714542 is a deficient number, since it is larger than the sum of its proper divisors (687064658).

809714542 is a wasteful number, since it uses less digits than its factorization.

809714542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5740.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 809714542 is about 28455.4835137272. The cubic root of 809714542 is about 932.0602346759.

The spelling of 809714542 in words is "eight hundred nine million, seven hundred fourteen thousand, five hundred forty-two".