86571442 has 8 divisors (see below), whose sum is σ = 129919536. Its totient is φ = 43264932.

The previous prime is 86571421. The next prime is 86571461. The reversal of 86571442 is 24417568.

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

It is a super-2 number, since 2×86571442² = 14989229139918728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4528 + ... + 13915.

It is an arithmetic number, because the mean of its divisors is an integer number (16239942).

Almost surely, 2^86571442 is an apocalyptic number.

86571442 is a deficient number, since it is larger than the sum of its proper divisors (43348094).

86571442 is a wasteful number, since it uses less digits than its factorization.

86571442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20792.

The product of its digits is 53760, while the sum is 37.

The square root of 86571442 is about 9304.3775718744. The cubic root of 86571442 is about 442.3759929998.

The spelling of 86571442 in words is "eighty-six million, five hundred seventy-one thousand, four hundred forty-two".