12341721 has 16 divisors (see below), whose sum is σ = 18892800. Its totient is φ = 7020048.

The previous prime is 12341713. The next prime is 12341737. The reversal of 12341721 is 12714321.

It is not a de Polignac number, because 12341721 - 2³ = 12341713 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (12341741) 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 15 ways as a sum of consecutive naturals, for example, 3790 + ... + 6248.

It is an arithmetic number, because the mean of its divisors is an integer number (1180800).

Almost surely, 2^12341721 is an apocalyptic number.

It is an amenable number.

12341721 is a deficient number, since it is larger than the sum of its proper divisors (6551079).

12341721 is a wasteful number, since it uses less digits than its factorization.

12341721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2708.

The product of its digits is 336, while the sum is 21.

The square root of 12341721 is about 3513.0785644503. The cubic root of 12341721 is about 231.0957231512.

The spelling of 12341721 in words is "twelve million, three hundred forty-one thousand, seven hundred twenty-one".