86142278 has 16 divisors (see below), whose sum is σ = 131978160. Its totient is φ = 42153696.

The previous prime is 86142239. The next prime is 86142313. The reversal of 86142278 is 87224168.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58313 + ... + 59771.

It is an arithmetic number, because the mean of its divisors is an integer number (8248635).

Almost surely, 2^86142278 is an apocalyptic number.

86142278 is a deficient number, since it is larger than the sum of its proper divisors (45835882).

86142278 is a wasteful number, since it uses less digits than its factorization.

86142278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2071.

The product of its digits is 43008, while the sum is 38.

The square root of 86142278 is about 9281.2864410059. The cubic root of 86142278 is about 441.6437791075.

The spelling of 86142278 in words is "eighty-six million, one hundred forty-two thousand, two hundred seventy-eight".