7805842 has 16 divisors (see below), whose sum is σ = 12830400. Its totient is φ = 3532240.

The previous prime is 7805821. The next prime is 7805851. The reversal of 7805842 is 2485087.

It is a junction number, because it is equal to n+sod(n) for n = 7805798 and 7805807.

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 7 ways as a sum of consecutive naturals, for example, 5259 + ... + 6577.

It is an arithmetic number, because the mean of its divisors is an integer number (801900).

Almost surely, 2^7805842 is an apocalyptic number.

7805842 is a deficient number, since it is larger than the sum of its proper divisors (5024558).

7805842 is a wasteful number, since it uses less digits than its factorization.

7805842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601.

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 7805842 is about 2793.8936987652. The cubic root of 7805842 is about 198.3687479228.

The spelling of 7805842 in words is "seven million, eight hundred five thousand, eight hundred forty-two".