12144109 has 4 divisors (see below), whose sum is σ = 12269404. Its totient is φ = 12018816.

The previous prime is 12144101. The next prime is 12144113. The reversal of 12144109 is 90144121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3861225 + 8282884 = 1965^2 + 2878^2 .

It is a cyclic number.

It is not a de Polignac number, because 12144109 - 2³ = 12144101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12144109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12144101) 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, 62502 + ... + 62695.

It is an arithmetic number, because the mean of its divisors is an integer number (3067351).

Almost surely, 2^12144109 is an apocalyptic number.

It is an amenable number.

12144109 is a deficient number, since it is larger than the sum of its proper divisors (125295).

12144109 is an equidigital number, since it uses as much as digits as its factorization.

12144109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125294.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 12144109 is about 3484.8398815441. The cubic root of 12144109 is about 229.8556687414.

The spelling of 12144109 in words is "twelve million, one hundred forty-four thousand, one hundred nine".