12145791 has 8 divisors (see below), whose sum is σ = 18507904. Its totient is φ = 6940440.

The previous prime is 12145781. The next prime is 12145801. The reversal of 12145791 is 19754121.

12145791 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12145781) and next prime (12145801).

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

It is not a de Polignac number, because 12145791 - 2⁵ = 12145759 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 (12145711) 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, 289165 + ... + 289206.

It is an arithmetic number, because the mean of its divisors is an integer number (2313488).

Almost surely, 2^12145791 is an apocalyptic number.

12145791 is a deficient number, since it is larger than the sum of its proper divisors (6362113).

12145791 is an equidigital number, since it uses as much as digits as its factorization.

12145791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578381.

The product of its digits is 2520, while the sum is 30.

The square root of 12145791 is about 3485.0812042189. The cubic root of 12145791 is about 229.8662801796.

The spelling of 12145791 in words is "twelve million, one hundred forty-five thousand, seven hundred ninety-one".