1308457 has 2 divisors, whose sum is σ = 1308458. Its totient is φ = 1308456.

The previous prime is 1308421. The next prime is 1308467. The reversal of 1308457 is 7548031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1245456 + 63001 = 1116^2 + 251^2 .

It is an emirp because it is prime and its reverse (7548031) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1308457 is a prime.

It is not a weakly prime, because it can be changed into another prime (1308467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 654228 + 654229.

It is an arithmetic number, because the mean of its divisors is an integer number (654229).

2^1308457 is an apocalyptic number.

It is an amenable number.

1308457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1308457 is an equidigital number, since it uses as much as digits as its factorization.

1308457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 1308457 is about 1143.8780529410. The cubic root of 1308457 is about 109.3754413043.

The spelling of 1308457 in words is "one million, three hundred eight thousand, four hundred fifty-seven".