1266271 has 2 divisors, whose sum is σ = 1266272. Its totient is φ = 1266270.

The previous prime is 1266269. The next prime is 1266277. The reversal of 1266271 is 1726621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1266271 - 2¹ = 1266269 is a prime.

Together with 1266269, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1266277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633135 + 633136.

It is an arithmetic number, because the mean of its divisors is an integer number (633136).

2^1266271 is an apocalyptic number.

1266271 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266271 is an equidigital number, since it uses as much as digits as its factorization.

1266271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 25.

The square root of 1266271 is about 1125.2870744837. The cubic root of 1266271 is about 108.1871184595.

The spelling of 1266271 in words is "one million, two hundred sixty-six thousand, two hundred seventy-one".