809242 has 8 divisors (see below), whose sum is σ = 1387296. Its totient is φ = 346812.

The previous prime is 809239. The next prime is 809243. The reversal of 809242 is 242908.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×809242² = 1309745229128, which contains 22 as substring.

It is a plaindrome in base 13.

It is a zygodrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (809243) 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, 28888 + ... + 28915.

It is an arithmetic number, because the mean of its divisors is an integer number (173412).

2⁸⁰⁹²⁴² is an apocalyptic number.

809242 is a deficient number, since it is larger than the sum of its proper divisors (578054).

809242 is a wasteful number, since it uses less digits than its factorization.

809242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57812.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 809242 is about 899.5787903236. The cubic root of 809242 is about 93.1878885451.

The spelling of 809242 in words is "eight hundred nine thousand, two hundred forty-two".