12140109 has 6 divisors (see below), whose sum is σ = 17535726. Its totient is φ = 8093400.

The previous prime is 12140081. The next prime is 12140111. The reversal of 12140109 is 90104121.

12140109 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 10692900 + 1447209 = 3270^2 + 1203^2 .

It is not a de Polignac number, because 12140109 - 2¹² = 12136013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12140091 and 12140100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12140129) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 674442 + ... + 674459.

It is an arithmetic number, because the mean of its divisors is an integer number (2922621).

Almost surely, 2^12140109 is an apocalyptic number.

It is an amenable number.

12140109 is a deficient number, since it is larger than the sum of its proper divisors (5395617).

12140109 is a wasteful number, since it uses less digits than its factorization.

12140109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348907 (or 1348904 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 12140109 is about 3484.2659198173. The cubic root of 12140109 is about 229.8304295180.

The spelling of 12140109 in words is "twelve million, one hundred forty thousand, one hundred nine".