12171873 has 8 divisors (see below), whose sum is σ = 18547648. Its totient is φ = 6955344.

The previous prime is 12171833. The next prime is 12171889. The reversal of 12171873 is 37817121.

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

It is not a de Polignac number, because 12171873 - 2⁸ = 12171617 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12171873.

It is not an unprimeable number, because it can be changed into a prime (12171833) 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 7 ways as a sum of consecutive naturals, for example, 289786 + ... + 289827.

It is an arithmetic number, because the mean of its divisors is an integer number (2318456).

Almost surely, 2^12171873 is an apocalyptic number.

It is an amenable number.

12171873 is a deficient number, since it is larger than the sum of its proper divisors (6375775).

12171873 is an equidigital number, since it uses as much as digits as its factorization.

12171873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579623.

The product of its digits is 2352, while the sum is 30.

The square root of 12171873 is about 3488.8211476085. The cubic root of 12171873 is about 230.0307016357.

Adding to 12171873 its reverse (37817121), we get a palindrome (49988994).

The spelling of 12171873 in words is "twelve million, one hundred seventy-one thousand, eight hundred seventy-three".