86427121 has 4 divisors (see below), whose sum is σ = 94284144. Its totient is φ = 78570100.

The previous prime is 86427113. The next prime is 86427151. The reversal of 86427121 is 12172468.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86427121 - 2³ = 86427113 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86427151) 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, 3928495 + ... + 3928516.

It is an arithmetic number, because the mean of its divisors is an integer number (23571036).

Almost surely, 2^86427121 is an apocalyptic number.

It is an amenable number.

86427121 is a deficient number, since it is larger than the sum of its proper divisors (7857023).

86427121 is a wasteful number, since it uses less digits than its factorization.

86427121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7857022.

The product of its digits is 5376, while the sum is 31.

The square root of 86427121 is about 9296.6187939487. The cubic root of 86427121 is about 442.1300317654.

Adding to 86427121 its reverse (12172468), we get a palindrome (98599589).

The spelling of 86427121 in words is "eighty-six million, four hundred twenty-seven thousand, one hundred twenty-one".