805542 has 8 divisors (see below), whose sum is σ = 1611096. Its totient is φ = 268512.

The previous prime is 805537. The next prime is 805559. The reversal of 805542 is 245508.

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

805542 is an admirable number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 805542.

It is an unprimeable number.

805542 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67123 + ... + 67134.

It is an arithmetic number, because the mean of its divisors is an integer number (201387).

2⁸⁰⁵⁵⁴² is an apocalyptic number.

805542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

805542 is a wasteful number, since it uses less digits than its factorization.

805542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134262.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 805542 is about 897.5199162136. The cubic root of 805542 is about 93.0456476106.

The spelling of 805542 in words is "eight hundred five thousand, five hundred forty-two".