12428197 has 2 divisors, whose sum is σ = 12428198. Its totient is φ = 12428196.

The previous prime is 12428191. The next prime is 12428203. The reversal of 12428197 is 79182421.

It is a balanced prime because it is at equal distance from previous prime (12428191) and next prime (12428203).

It can be written as a sum of positive squares in only one way, i.e., 12292036 + 136161 = 3506^2 + 369^2 .

It is a cyclic number.

It is not a de Polignac number, because 12428197 - 2¹⁹ = 11903909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12428191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6214098 + 6214099.

It is an arithmetic number, because the mean of its divisors is an integer number (6214099).

Almost surely, 2^12428197 is an apocalyptic number.

It is an amenable number.

12428197 is a deficient number, since it is larger than the sum of its proper divisors (1).

12428197 is an equidigital number, since it uses as much as digits as its factorization.

12428197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 34.

The square root of 12428197 is about 3525.3648038182. The cubic root of 12428197 is about 231.6342147552.

The spelling of 12428197 in words is "twelve million, four hundred twenty-eight thousand, one hundred ninety-seven".