12380261 has 4 divisors (see below), whose sum is σ = 12463500. Its totient is φ = 12297024.

The previous prime is 12380257. The next prime is 12380273. The reversal of 12380261 is 16208321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 649636 + 11730625 = 806^2 + 3425^2 .

It is a cyclic number.

It is not a de Polignac number, because 12380261 - 2² = 12380257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12380201) 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 3 ways as a sum of consecutive naturals, for example, 41396 + ... + 41693.

It is an arithmetic number, because the mean of its divisors is an integer number (3115875).

Almost surely, 2^12380261 is an apocalyptic number.

It is an amenable number.

12380261 is a deficient number, since it is larger than the sum of its proper divisors (83239).

12380261 is an equidigital number, since it uses as much as digits as its factorization.

12380261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83238.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 12380261 is about 3518.5595063889. The cubic root of 12380261 is about 231.3360239001.

Adding to 12380261 its reverse (16208321), we get a palindrome (28588582).

The spelling of 12380261 in words is "twelve million, three hundred eighty thousand, two hundred sixty-one".