12391041 has 32 divisors (see below), whose sum is σ = 18930688. Its totient is φ = 7153920.

The previous prime is 12391039. The next prime is 12391069. The reversal of 12391041 is 14019321.

It is not a de Polignac number, because 12391041 - 2¹ = 12391039 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12390999 and 12391017.

It is not an unprimeable number, because it can be changed into a prime (12391031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44595 + ... + 44871.

It is an arithmetic number, because the mean of its divisors is an integer number (591584).

Almost surely, 2^12391041 is an apocalyptic number.

It is an amenable number.

12391041 is a deficient number, since it is larger than the sum of its proper divisors (6539647).

12391041 is a wasteful number, since it uses less digits than its factorization.

12391041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 12391041 is about 3520.0910499588. The cubic root of 12391041 is about 231.4031490027.

The spelling of 12391041 in words is "twelve million, three hundred ninety-one thousand, forty-one".