85142867 has 4 divisors (see below), whose sum is σ = 85171680. Its totient is φ = 85114056.

The previous prime is 85142839. The next prime is 85142879. The reversal of 85142867 is 76824158.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76824158 = 2 ⋅38412079.

It is a cyclic number.

It is not a de Polignac number, because 85142867 - 2¹⁰ = 85141843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85142807) 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, 9392 + ... + 16077.

It is an arithmetic number, because the mean of its divisors is an integer number (21292920).

Almost surely, 2^85142867 is an apocalyptic number.

85142867 is a deficient number, since it is larger than the sum of its proper divisors (28813).

85142867 is a wasteful number, since it uses less digits than its factorization.

85142867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28812.

The product of its digits is 107520, while the sum is 41.

The square root of 85142867 is about 9227.2892552472. The cubic root of 85142867 is about 439.9291673167.

The spelling of 85142867 in words is "eighty-five million, one hundred forty-two thousand, eight hundred sixty-seven".