12130857 has 16 divisors (see below), whose sum is σ = 18458880. Its totient is φ = 7868016.

The previous prime is 12130849. The next prime is 12130861. The reversal of 12130857 is 75803121.

12130857 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12130857 - 2³ = 12130849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 12130857.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12130357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5073 + ... + 7070.

It is an arithmetic number, because the mean of its divisors is an integer number (1153680).

Almost surely, 2^12130857 is an apocalyptic number.

It is an amenable number.

12130857 is a deficient number, since it is larger than the sum of its proper divisors (6328023).

12130857 is a wasteful number, since it uses less digits than its factorization.

12130857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12189 (or 12183 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 12130857 is about 3482.9379839440. The cubic root of 12130857 is about 229.7720299452.

Adding to 12130857 its reverse (75803121), we get a palindrome (87933978).

The spelling of 12130857 in words is "twelve million, one hundred thirty thousand, eight hundred fifty-seven".