12129306 has 32 divisors (see below), whose sum is σ = 27993600. Its totient is φ = 3431856.

The previous prime is 12129287. The next prime is 12129343. The reversal of 12129306 is 60392121.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3145 + ... + 5843.

It is an arithmetic number, because the mean of its divisors is an integer number (874800).

Almost surely, 2^12129306 is an apocalyptic number.

12129306 is an abundant number, since it is smaller than the sum of its proper divisors (15864294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12129306 is a wasteful number, since it uses less digits than its factorization.

12129306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2818.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 12129306 is about 3482.7153199766. The cubic root of 12129306 is about 229.7622369683.

The spelling of 12129306 in words is "twelve million, one hundred twenty-nine thousand, three hundred six".