85042859 has 4 divisors (see below), whose sum is σ = 92774040. Its totient is φ = 77311680.

The previous prime is 85042847. The next prime is 85042871. The reversal of 85042859 is 95824058.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (85042847) and next prime (85042871).

It is a cyclic number.

It is not a de Polignac number, because 85042859 - 2⁸ = 85042603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85042829) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3865574 + ... + 3865595.

It is an arithmetic number, because the mean of its divisors is an integer number (23193510).

Almost surely, 2^85042859 is an apocalyptic number.

85042859 is a deficient number, since it is larger than the sum of its proper divisors (7731181).

85042859 is a wasteful number, since it uses less digits than its factorization.

85042859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7731180.

The product of its (nonzero) digits is 115200, while the sum is 41.

The square root of 85042859 is about 9221.8685199909. The cubic root of 85042859 is about 439.7568542979.

The spelling of 85042859 in words is "eighty-five million, forty-two thousand, eight hundred fifty-nine".