12128349 has 8 divisors (see below), whose sum is σ = 16241472. Its totient is φ = 8050400.

The previous prime is 12128339. The next prime is 12128357. The reversal of 12128349 is 94382121.

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 12128349 - 2¹⁷ = 11997277 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12128329) 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 7 ways as a sum of consecutive naturals, for example, 7977 + ... + 9374.

It is an arithmetic number, because the mean of its divisors is an integer number (2030184).

Almost surely, 2^12128349 is an apocalyptic number.

It is an amenable number.

12128349 is a deficient number, since it is larger than the sum of its proper divisors (4113123).

12128349 is a wasteful number, since it uses less digits than its factorization.

12128349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17587.

The product of its digits is 3456, while the sum is 30.

The square root of 12128349 is about 3482.5779244692. The cubic root of 12128349 is about 229.7561940767.

The spelling of 12128349 in words is "twelve million, one hundred twenty-eight thousand, three hundred forty-nine".