12240261 has 16 divisors (see below), whose sum is σ = 19782720. Its totient is φ = 7418160.

The previous prime is 12240227. The next prime is 12240271. The reversal of 12240261 is 16204221.

12240261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12240261 - 2⁶ = 12240197 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12240271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20310 + ... + 20903.

It is an arithmetic number, because the mean of its divisors is an integer number (1236420).

Almost surely, 2^12240261 is an apocalyptic number.

12240261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12240261 is a deficient number, since it is larger than the sum of its proper divisors (7542459).

12240261 is a wasteful number, since it uses less digits than its factorization.

12240261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41233 (or 41227 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 12240261 is about 3498.6084376506. The cubic root of 12240261 is about 230.4607085575.

Adding to 12240261 its reverse (16204221), we get a palindrome (28444482).

The spelling of 12240261 in words is "twelve million, two hundred forty thousand, two hundred sixty-one".