12128341 has 8 divisors (see below), whose sum is σ = 12538784. Its totient is φ = 11722320.

The previous prime is 12128339. The next prime is 12128357. The reversal of 12128341 is 14382121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 7-Lehmer number, since φ(12128341) divides (12128341-1)⁷.

It is a cyclic number.

It is not a de Polignac number, because 12128341 - 2¹ = 12128339 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 (12128381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5026 + ... + 7036.

It is an arithmetic number, because the mean of its divisors is an integer number (1567348).

Almost surely, 2^12128341 is an apocalyptic number.

12128341 is the 2011-st octagonal number.

It is an amenable number.

12128341 is a deficient number, since it is larger than the sum of its proper divisors (410443).

12128341 is a wasteful number, since it uses less digits than its factorization.

12128341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2211.

The product of its digits is 384, while the sum is 22.

The square root of 12128341 is about 3482.5767758945. The cubic root of 12128341 is about 229.7561435601.

The spelling of 12128341 in words is "twelve million, one hundred twenty-eight thousand, three hundred forty-one".