12127897 has 8 divisors (see below), whose sum is σ = 12500936. Its totient is φ = 11757312.

The previous prime is 12127879. The next prime is 12127903. The reversal of 12127897 is 79872121.

12127897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2368521 + 9759376 = 1539^2 + 3124^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12127897 - 2⁷ = 12127769 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12127807) 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, 15643 + ... + 16399.

It is an arithmetic number, because the mean of its divisors is an integer number (1562617).

Almost surely, 2^12127897 is an apocalyptic number.

It is an amenable number.

12127897 is a deficient number, since it is larger than the sum of its proper divisors (373039).

12127897 is an equidigital number, since it uses as much as digits as its factorization.

12127897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227.

The product of its digits is 14112, while the sum is 37.

The square root of 12127897 is about 3482.5130294085. The cubic root of 12127897 is about 229.7533398523.

The spelling of 12127897 in words is "twelve million, one hundred twenty-seven thousand, eight hundred ninety-seven".