85712123 has 18 divisors (see below), whose sum is σ = 101421468. Its totient is φ = 72224040.

The previous prime is 85712111. The next prime is 85712129. The reversal of 85712123 is 32121758.

It is not a de Polignac number, because 85712123 - 2²⁶ = 18603259 is a prime.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85712129) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 246836 + ... + 247182.

It is an arithmetic number, because the mean of its divisors is an integer number (5634526).

Almost surely, 2^85712123 is an apocalyptic number.

85712123 is a deficient number, since it is larger than the sum of its proper divisors (15709345).

85712123 is an equidigital number, since it uses as much as digits as its factorization.

85712123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503 (or 425 counting only the distinct ones).

The product of its digits is 3360, while the sum is 29.

The square root of 85712123 is about 9258.0841970680. The cubic root of 85712123 is about 440.9074299696.

The spelling of 85712123 in words is "eighty-five million, seven hundred twelve thousand, one hundred twenty-three".