1341257 has 2 divisors, whose sum is σ = 1341258. Its totient is φ = 1341256.

The previous prime is 1341217. The next prime is 1341259. The reversal of 1341257 is 7521431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1048576 + 292681 = 1024^2 + 541^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1341257 is a prime.

Together with 1341259, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1341259) 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, 670628 + 670629.

It is an arithmetic number, because the mean of its divisors is an integer number (670629).

2^1341257 is an apocalyptic number.

It is an amenable number.

1341257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1341257 is an equidigital number, since it uses as much as digits as its factorization.

1341257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 840, while the sum is 23.

The square root of 1341257 is about 1158.1265043163. The cubic root of 1341257 is about 110.2818392453.

Adding to 1341257 its reverse (7521431), we get a palindrome (8862688).

The spelling of 1341257 in words is "one million, three hundred forty-one thousand, two hundred fifty-seven".