12261413 has 4 divisors (see below), whose sum is σ = 12268428. Its totient is φ = 12254400.

The previous prime is 12261409. The next prime is 12261443. The reversal of 12261413 is 31416221.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 31416221 = 17 ⋅1848013.

It can be written as a sum of positive squares in 2 ways, for example, as 8567329 + 3694084 = 2927^2 + 1922^2 .

It is a cyclic number.

It is not a de Polignac number, because 12261413 - 2² = 12261409 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12261443) 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, 1463 + ... + 5163.

It is an arithmetic number, because the mean of its divisors is an integer number (3067107).

Almost surely, 2^12261413 is an apocalyptic number.

It is an amenable number.

12261413 is a deficient number, since it is larger than the sum of its proper divisors (7015).

12261413 is an equidigital number, since it uses as much as digits as its factorization.

12261413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7014.

The product of its digits is 288, while the sum is 20.

The square root of 12261413 is about 3501.6300489915. The cubic root of 12261413 is about 230.5933827344.

Adding to 12261413 its reverse (31416221), we get a palindrome (43677634).

The spelling of 12261413 in words is "twelve million, two hundred sixty-one thousand, four hundred thirteen".