85142971 has 8 divisors (see below), whose sum is σ = 89740800. Its totient is φ = 80556840.

The previous prime is 85142929. The next prime is 85142983. The reversal of 85142971 is 17924158.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85142971 - 2¹³ = 85134779 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85142971.

It is not an unprimeable number, because it can be changed into a prime (85142371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14850 + ... + 19768.

It is an arithmetic number, because the mean of its divisors is an integer number (11217600).

Almost surely, 2^85142971 is an apocalyptic number.

85142971 is a deficient number, since it is larger than the sum of its proper divisors (4597829).

85142971 is a wasteful number, since it uses less digits than its factorization.

85142971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5849.

The product of its digits is 20160, while the sum is 37.

The square root of 85142971 is about 9227.2948907033. The cubic root of 85142971 is about 439.9293464377.

The spelling of 85142971 in words is "eighty-five million, one hundred forty-two thousand, nine hundred seventy-one".