12130549 has 4 divisors (see below), whose sum is σ = 12137580. Its totient is φ = 12123520.

The previous prime is 12130541. The next prime is 12130553. The reversal of 12130549 is 94503121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 94503121 = 43 ⋅2197747.

It can be written as a sum of positive squares in 2 ways, for example, as 9548100 + 2582449 = 3090^2 + 1607^2 .

It is a cyclic number.

It is not a de Polignac number, because 12130549 - 2³ = 12130541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12130541) 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 3 ways as a sum of consecutive naturals, for example, 1047 + ... + 5035.

It is an arithmetic number, because the mean of its divisors is an integer number (3034395).

Almost surely, 2^12130549 is an apocalyptic number.

It is an amenable number.

12130549 is a deficient number, since it is larger than the sum of its proper divisors (7031).

12130549 is an equidigital number, since it uses as much as digits as its factorization.

12130549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7030.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 12130549 is about 3482.8937681187. The cubic root of 12130549 is about 229.7700853070.

The spelling of 12130549 in words is "twelve million, one hundred thirty thousand, five hundred forty-nine".