12135029 has 4 divisors (see below), whose sum is σ = 12142284. Its totient is φ = 12127776.

The previous prime is 12135023. The next prime is 12135031. The reversal of 12135029 is 92053121.

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.

It can be written as a sum of positive squares in 2 ways, for example, as 8254129 + 3880900 = 2873^2 + 1970^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12135029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12134995 and 12135013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12135023) 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, 299 + ... + 4935.

It is an arithmetic number, because the mean of its divisors is an integer number (3035571).

Almost surely, 2^12135029 is an apocalyptic number.

It is an amenable number.

12135029 is a deficient number, since it is larger than the sum of its proper divisors (7255).

12135029 is an equidigital number, since it uses as much as digits as its factorization.

12135029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7254.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 12135029 is about 3483.5368521088. The cubic root of 12135029 is about 229.7983677117.

The spelling of 12135029 in words is "twelve million, one hundred thirty-five thousand, twenty-nine".