8109121 has 8 divisors (see below), whose sum is σ = 8235360. Its totient is φ = 7984128.

The previous prime is 8109109. The next prime is 8109131. The reversal of 8109121 is 1219018.

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

It is a cyclic number.

It is not a de Polignac number, because 8109121 - 2⁵ = 8109089 is a prime.

It is an Ulam number.

It is a Duffinian number.

8109121 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 8109092 and 8109101.

It is not an unprimeable number, because it can be changed into a prime (8109131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31425 + ... + 31681.

It is an arithmetic number, because the mean of its divisors is an integer number (1029420).

Almost surely, 2^8109121 is an apocalyptic number.

It is an amenable number.

8109121 is a deficient number, since it is larger than the sum of its proper divisors (126239).

8109121 is a wasteful number, since it uses less digits than its factorization.

8109121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 8109121 is about 2847.6518396742. The cubic root of 8109121 is about 200.9052382039.

It can be divided in two parts, 8109 and 121, that multiplied together give a palindrome (981189).

The spelling of 8109121 in words is "eight million, one hundred nine thousand, one hundred twenty-one".