12005261 has 8 divisors (see below), whose sum is σ = 12395040. Its totient is φ = 11621808.

The previous prime is 12005243. The next prime is 12005269. The reversal of 12005261 is 16250021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12005261 - 2¹⁸ = 11743117 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 (12005269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2435 + ... + 5471.

It is an arithmetic number, because the mean of its divisors is an integer number (1549380).

Almost surely, 2^12005261 is an apocalyptic number.

It is an amenable number.

12005261 is a deficient number, since it is larger than the sum of its proper divisors (389779).

12005261 is an equidigital number, since it uses as much as digits as its factorization.

12005261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3163.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 12005261 is about 3464.8608918685. The cubic root of 12005261 is about 228.9763010759.

Adding to 12005261 its reverse (16250021), we get a palindrome (28255282).

The spelling of 12005261 in words is "twelve million, five thousand, two hundred sixty-one".