12045961 has 4 divisors (see below), whose sum is σ = 12053524. Its totient is φ = 12038400.

The previous prime is 12045947. The next prime is 12045973. The reversal of 12045961 is 16954021.

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.

It can be written as a sum of positive squares in 2 ways, for example, as 4177936 + 7868025 = 2044^2 + 2805^2 .

It is a cyclic number.

It is not a de Polignac number, because 12045961 - 2⁷ = 12045833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12045661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360 + ... + 4921.

It is an arithmetic number, because the mean of its divisors is an integer number (3013381).

Almost surely, 2^12045961 is an apocalyptic number.

It is an amenable number.

12045961 is a deficient number, since it is larger than the sum of its proper divisors (7563).

12045961 is an equidigital number, since it uses as much as digits as its factorization.

12045961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7562.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 12045961 is about 3470.7291741074. The cubic root of 12045961 is about 229.2347662004.

Adding to 12045961 its reverse (16954021), we get a palindrome (28999982).

The spelling of 12045961 in words is "twelve million, forty-five thousand, nine hundred sixty-one".