86578142 has 16 divisors (see below), whose sum is σ = 152040672. Its totient is φ = 36199680.

The previous prime is 86578139. The next prime is 86578147. The reversal of 86578142 is 24187568.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a self number, because there is not a number n which added to its sum of digits gives 86578142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86578147) 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, 74843 + ... + 75990.

It is an arithmetic number, because the mean of its divisors is an integer number (9502542).

Almost surely, 2^86578142 is an apocalyptic number.

86578142 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

86578142 is a deficient number, since it is larger than the sum of its proper divisors (65462530).

86578142 is a wasteful number, since it uses less digits than its factorization.

86578142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150883.

The product of its digits is 107520, while the sum is 41.

The square root of 86578142 is about 9304.7376104864. The cubic root of 86578142 is about 442.3874049336.

The spelling of 86578142 in words is "eighty-six million, five hundred seventy-eight thousand, one hundred forty-two".