12158005 has 8 divisors (see below), whose sum is σ = 15357600. Its totient is φ = 9214416.

The previous prime is 12157997. The next prime is 12158011. The reversal of 12158005 is 50085121.

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 12158005 - 2³ = 12157997 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 63895 + ... + 64084.

It is an arithmetic number, because the mean of its divisors is an integer number (1919700).

Almost surely, 2^12158005 is an apocalyptic number.

It is an amenable number.

12158005 is a deficient number, since it is larger than the sum of its proper divisors (3199595).

12158005 is a wasteful number, since it uses less digits than its factorization.

12158005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128003.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 12158005 is about 3486.8330903558. The cubic root of 12158005 is about 229.9433067576.

The spelling of 12158005 in words is "twelve million, one hundred fifty-eight thousand, five".