12378241 has 2 divisors, whose sum is σ = 12378242. Its totient is φ = 12378240.

The previous prime is 12378199. The next prime is 12378251. The reversal of 12378241 is 14287321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12215025 + 163216 = 3495^2 + 404^2 .

It is a cyclic number.

It is not a de Polignac number, because 12378241 - 2¹³ = 12370049 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12378251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6189120 + 6189121.

It is an arithmetic number, because the mean of its divisors is an integer number (6189121).

Almost surely, 2^12378241 is an apocalyptic number.

It is an amenable number.

12378241 is a deficient number, since it is larger than the sum of its proper divisors (1).

12378241 is an equidigital number, since it uses as much as digits as its factorization.

12378241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 28.

The square root of 12378241 is about 3518.2724453913. The cubic root of 12378241 is about 231.3234413925.

The spelling of 12378241 in words is "twelve million, three hundred seventy-eight thousand, two hundred forty-one".