1266743 has 2 divisors, whose sum is σ = 1266744. Its totient is φ = 1266742.

The previous prime is 1266731. The next prime is 1266751. The reversal of 1266743 is 3476621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1266743 - 2⁸ = 1266487 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1266763) 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, 633371 + 633372.

It is an arithmetic number, because the mean of its divisors is an integer number (633372).

2^1266743 is an apocalyptic number.

1266743 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266743 is an equidigital number, since it uses as much as digits as its factorization.

1266743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 29.

The square root of 1266743 is about 1125.4967792046. The cubic root of 1266743 is about 108.2005589675.

The spelling of 1266743 in words is "one million, two hundred sixty-six thousand, seven hundred forty-three".