12040541 has 4 divisors (see below), whose sum is σ = 12121500. Its totient is φ = 11959584.

The previous prime is 12040537. The next prime is 12040571. The reversal of 12040541 is 14504021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14504021 = 7 ⋅2072003.

It can be written as a sum of positive squares in 2 ways, for example, as 5044516 + 6996025 = 2246^2 + 2645^2 .

It is a cyclic number.

It is not a de Polignac number, because 12040541 - 2² = 12040537 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 (12040531) 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, 40256 + ... + 40553.

It is an arithmetic number, because the mean of its divisors is an integer number (3030375).

Almost surely, 2^12040541 is an apocalyptic number.

It is an amenable number.

12040541 is a deficient number, since it is larger than the sum of its proper divisors (80959).

12040541 is an equidigital number, since it uses as much as digits as its factorization.

12040541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80958.

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

The square root of 12040541 is about 3469.9482705078. The cubic root of 12040541 is about 229.2003801567.

Adding to 12040541 its reverse (14504021), we get a palindrome (26544562).

The spelling of 12040541 in words is "twelve million, forty thousand, five hundred forty-one".