86665142 has 4 divisors (see below), whose sum is σ = 129997716. Its totient is φ = 43332570.

The previous prime is 86665121. The next prime is 86665147. The reversal of 86665142 is 24156668.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 86665096 and 86665105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86665147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21666284 + ... + 21666287.

It is an arithmetic number, because the mean of its divisors is an integer number (32499429).

Almost surely, 2^86665142 is an apocalyptic number.

86665142 is a deficient number, since it is larger than the sum of its proper divisors (43332574).

86665142 is a wasteful number, since it uses less digits than its factorization.

86665142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43332573.

The product of its digits is 69120, while the sum is 38.

The square root of 86665142 is about 9309.4114744166. The cubic root of 86665142 is about 442.5355363164.

The spelling of 86665142 in words is "eighty-six million, six hundred sixty-five thousand, one hundred forty-two".