12015005 has 8 divisors (see below), whose sum is σ = 15266232. Its totient is φ = 9046528.

The previous prime is 12015001. The next prime is 12015013. The reversal of 12015005 is 50051021.

It can be written as a sum of positive squares in 4 ways, for example, as 4468996 + 7546009 = 2114^2 + 2747^2 .

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 12015005 - 2² = 12015001 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 (12015001) 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, 70592 + ... + 70761.

It is an arithmetic number, because the mean of its divisors is an integer number (1908279).

Almost surely, 2^12015005 is an apocalyptic number.

It is an amenable number.

12015005 is a deficient number, since it is larger than the sum of its proper divisors (3251227).

12015005 is a wasteful number, since it uses less digits than its factorization.

12015005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141375.

The product of its (nonzero) digits is 50, while the sum is 14.

The square root of 12015005 is about 3466.2667237245. The cubic root of 12015005 is about 229.0382334159.

Adding to 12015005 its reverse (50051021), we get a palindrome (62066026).

The spelling of 12015005 in words is "twelve million, fifteen thousand, five".