12129065 has 8 divisors (see below), whose sum is σ = 15674568. Its totient is φ = 8956800.

The previous prime is 12129059. The next prime is 12129067. The reversal of 12129065 is 56092121.

It can be written as a sum of positive squares in 4 ways, for example, as 946729 + 11182336 = 973^2 + 3344^2 .

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

It is not a de Polignac number, because 12129065 - 2¹⁶ = 12063529 is a prime.

It is a super-2 number, since 2×12129065² = 294228435548450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12129067) 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, 93236 + ... + 93365.

It is an arithmetic number, because the mean of its divisors is an integer number (1959321).

Almost surely, 2^12129065 is an apocalyptic number.

It is an amenable number.

12129065 is a deficient number, since it is larger than the sum of its proper divisors (3545503).

12129065 is a wasteful number, since it uses less digits than its factorization.

12129065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186619.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 12129065 is about 3482.6807203647. The cubic root of 12129065 is about 229.7607152251.

The spelling of 12129065 in words is "twelve million, one hundred twenty-nine thousand, sixty-five".