1266047 has 2 divisors, whose sum is σ = 1266048. Its totient is φ = 1266046.

The previous prime is 1266043. The next prime is 1266059. The reversal of 1266047 is 7406621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1266047 - 2² = 1266043 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 (1266043) by changing a digit.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633023 + 633024.

It is an arithmetic number, because the mean of its divisors is an integer number (633024).

2^1266047 is an apocalyptic number.

1266047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266047 is an equidigital number, since it uses as much as digits as its factorization.

1266047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 1266047 is about 1125.1875399239. The cubic root of 1266047 is about 108.1807387446.

The spelling of 1266047 in words is "one million, two hundred sixty-six thousand, forty-seven".