12256841 has 4 divisors (see below), whose sum is σ = 12268932. Its totient is φ = 12244752.

The previous prime is 12256831. The next prime is 12256883. The reversal of 12256841 is 14865221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14865221 = 7 ⋅2123603.

It can be written as a sum of positive squares in 2 ways, for example, as 3136441 + 9120400 = 1771^2 + 3020^2 .

It is a cyclic number.

It is not a de Polignac number, because 12256841 - 2¹⁴ = 12240457 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12256831) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4370 + ... + 6603.

It is an arithmetic number, because the mean of its divisors is an integer number (3067233).

Almost surely, 2^12256841 is an apocalyptic number.

It is an amenable number.

12256841 is a deficient number, since it is larger than the sum of its proper divisors (12091).

12256841 is a wasteful number, since it uses less digits than its factorization.

12256841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12090.

The product of its digits is 3840, while the sum is 29.

The square root of 12256841 is about 3500.9771493113. The cubic root of 12256841 is about 230.5647181748.

The spelling of 12256841 in words is "twelve million, two hundred fifty-six thousand, eight hundred forty-one".