12041405 has 4 divisors (see below), whose sum is σ = 14449692. Its totient is φ = 9633120.

The previous prime is 12041401. The next prime is 12041411. The reversal of 12041405 is 50414021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50414021 = 7 ⋅7202003.

It can be written as a sum of positive squares in 2 ways, for example, as 4826809 + 7214596 = 2197^2 + 2686^2 .

It is not a de Polignac number, because 12041405 - 2² = 12041401 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 (12041401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1204136 + ... + 1204145.

It is an arithmetic number, because the mean of its divisors is an integer number (3612423).

Almost surely, 2^12041405 is an apocalyptic number.

It is an amenable number.

12041405 is a deficient number, since it is larger than the sum of its proper divisors (2408287).

12041405 is an equidigital number, since it uses as much as digits as its factorization.

12041405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2408286.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 12041405 is about 3470.0727658077. The cubic root of 12041405 is about 229.2058623132.

Adding to 12041405 its reverse (50414021), we get a palindrome (62455426).

The spelling of 12041405 in words is "twelve million, forty-one thousand, four hundred five".