85212843 has 4 divisors (see below), whose sum is σ = 113617128. Its totient is φ = 56808560.

The previous prime is 85212793. The next prime is 85212889. The reversal of 85212843 is 34821258.

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

It is a cyclic number.

It is not a de Polignac number, because 85212843 - 2⁹ = 85212331 is a prime.

It is a super-2 number, since 2×85212843² = 14522457224285298, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85212943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14202138 + ... + 14202143.

It is an arithmetic number, because the mean of its divisors is an integer number (28404282).

Almost surely, 2^85212843 is an apocalyptic number.

85212843 is a deficient number, since it is larger than the sum of its proper divisors (28404285).

85212843 is a wasteful number, since it uses less digits than its factorization.

85212843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28404284.

The product of its digits is 15360, while the sum is 33.

The square root of 85212843 is about 9231.0802726442. The cubic root of 85212843 is about 440.0496552087.

It can be divided in two parts, 852 and 12843, that added together give a triangular number (13695 = T₁₆₅).

The spelling of 85212843 in words is "eighty-five million, two hundred twelve thousand, eight hundred forty-three".