12681941 has 4 divisors (see below), whose sum is σ = 12689472. Its totient is φ = 12674412.

The previous prime is 12681937. The next prime is 12681959. The reversal of 12681941 is 14918621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12681941 - 2² = 12681937 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 = 12681898 and 12681907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12681931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50 + ... + 5036.

It is an arithmetic number, because the mean of its divisors is an integer number (3172368).

Almost surely, 2^12681941 is an apocalyptic number.

It is an amenable number.

12681941 is a deficient number, since it is larger than the sum of its proper divisors (7531).

12681941 is an equidigital number, since it uses as much as digits as its factorization.

12681941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7530.

The product of its digits is 3456, while the sum is 32.

The square root of 12681941 is about 3561.1712960766. The cubic root of 12681941 is about 233.2000161327.

The spelling of 12681941 in words is "twelve million, six hundred eighty-one thousand, nine hundred forty-one".