1306241 has 2 divisors, whose sum is σ = 1306242. Its totient is φ = 1306240.

The previous prime is 1306237. The next prime is 1306243. The reversal of 1306241 is 1426031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 758641 + 547600 = 871^2 + 740^2 .

It is a cyclic number.

It is not a de Polignac number, because 1306241 - 2² = 1306237 is a prime.

It is a Sophie Germain prime.

Together with 1306243, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1306243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 653120 + 653121.

It is an arithmetic number, because the mean of its divisors is an integer number (653121).

2^1306241 is an apocalyptic number.

It is an amenable number.

1306241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1306241 is an equidigital number, since it uses as much as digits as its factorization.

1306241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1306241 is about 1142.9090077517. The cubic root of 1306241 is about 109.3136604087.

The spelling of 1306241 in words is "one million, three hundred six thousand, two hundred forty-one".