12144897 has 48 divisors (see below), whose sum is σ = 19813248. Its totient is φ = 7413120.

The previous prime is 12144893. The next prime is 12144929. The reversal of 12144897 is 79844121.

12144897 is a `hidden beast` number, since 121 + 448 + 97 = 666.

It is not a de Polignac number, because 12144897 - 2² = 12144893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12144893) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 229123 + ... + 229175.

It is an arithmetic number, because the mean of its divisors is an integer number (412776).

Almost surely, 2^12144897 is an apocalyptic number.

It is an amenable number.

12144897 is a deficient number, since it is larger than the sum of its proper divisors (7668351).

12144897 is an equidigital number, since it uses as much as digits as its factorization.

12144897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132 (or 120 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 12144897 is about 3484.9529408587. The cubic root of 12144897 is about 229.8606402150.

It can be divided in two parts, 12144 and 897, that added together give a triangular number (13041 = T₁₆₁).

The spelling of 12144897 in words is "twelve million, one hundred forty-four thousand, eight hundred ninety-seven".