809342 has 4 divisors (see below), whose sum is σ = 1214016. Its totient is φ = 404670.

The previous prime is 809339. The next prime is 809357. The reversal of 809342 is 243908.

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, 202334 + ... + 202337.

It is an arithmetic number, because the mean of its divisors is an integer number (303504).

2⁸⁰⁹³⁴² is an apocalyptic number.

809342 is a deficient number, since it is larger than the sum of its proper divisors (404674).

809342 is a wasteful number, since it uses less digits than its factorization.

809342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404673.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 809342 is about 899.6343701749. The cubic root of 809342 is about 93.1917268716.

The spelling of 809342 in words is "eight hundred nine thousand, three hundred forty-two".