8042785 has 8 divisors (see below), whose sum is σ = 10219176. Its totient is φ = 6055680.

The previous prime is 8042779. The next prime is 8042807. The reversal of 8042785 is 5872408.

It can be written as a sum of positive squares in 4 ways, for example, as 358801 + 7683984 = 599^2 + 2772^2 .

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

It is not a de Polignac number, because 8042785 - 2³ = 8042777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8042785.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47226 + ... + 47395.

It is an arithmetic number, because the mean of its divisors is an integer number (1277397).

Almost surely, 2^8042785 is an apocalyptic number.

8042785 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8042785 is a deficient number, since it is larger than the sum of its proper divisors (2176391).

8042785 is a wasteful number, since it uses less digits than its factorization.

8042785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94643.

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

The square root of 8042785 is about 2835.9804301158. The cubic root of 8042785 is about 200.3559079387.

The spelling of 8042785 in words is "eight million, forty-two thousand, seven hundred eighty-five".