12145641 has 8 divisors (see below), whose sum is σ = 16277184. Its totient is φ = 8055600.

The previous prime is 12145607. The next prime is 12145669. The reversal of 12145641 is 14654121.

It is a happy number.

12145641 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12145641 - 2⁷ = 12145513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12145241) 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, 9685 + ... + 10866.

It is an arithmetic number, because the mean of its divisors is an integer number (2034648).

Almost surely, 2^12145641 is an apocalyptic number.

It is an amenable number.

12145641 is a deficient number, since it is larger than the sum of its proper divisors (4131543).

12145641 is a wasteful number, since it uses less digits than its factorization.

12145641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20751.

The product of its digits is 960, while the sum is 24.

The square root of 12145641 is about 3485.0596838505. The cubic root of 12145641 is about 229.8653338962.

Adding to 12145641 its reverse (14654121), we get a palindrome (26799762).

The spelling of 12145641 in words is "twelve million, one hundred forty-five thousand, six hundred forty-one".