86142559 has 4 divisors (see below), whose sum is σ = 86175360. Its totient is φ = 86109760.

The previous prime is 86142547. The next prime is 86142569. The reversal of 86142559 is 95524168.

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 86142559 - 2⁵ = 86142527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86142509) 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, 12082 + ... + 17839.

It is an arithmetic number, because the mean of its divisors is an integer number (21543840).

Almost surely, 2^86142559 is an apocalyptic number.

86142559 is a deficient number, since it is larger than the sum of its proper divisors (32801).

86142559 is a wasteful number, since it uses less digits than its factorization.

86142559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32800.

The product of its digits is 86400, while the sum is 40.

The square root of 86142559 is about 9281.3015789813. The cubic root of 86142559 is about 441.6442593276.

The spelling of 86142559 in words is "eighty-six million, one hundred forty-two thousand, five hundred fifty-nine".