85142312 has 8 divisors (see below), whose sum is σ = 159641850. Its totient is φ = 42571152.

The previous prime is 85142311. The next prime is 85142339. The reversal of 85142312 is 21324158.

It can be written as a sum of positive squares in only one way, i.e., 84750436 + 391876 = 9206^2 + 626^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (85142311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5321387 + ... + 5321402.

Almost surely, 2^85142312 is an apocalyptic number.

It is an amenable number.

85142312 is a deficient number, since it is larger than the sum of its proper divisors (74499538).

85142312 is a wasteful number, since it uses less digits than its factorization.

85142312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10642795 (or 10642791 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

The square root of 85142312 is about 9227.2591813604. The cubic root of 85142312 is about 439.9282114284.

The spelling of 85142312 in words is "eighty-five million, one hundred forty-two thousand, three hundred twelve".