1266291 has 24 divisors (see below), whose sum is σ = 2009280. Its totient is φ = 763776.

The previous prime is 1266281. The next prime is 1266301. The reversal of 1266291 is 1926621.

It is an interprime number because it is at equal distance from previous prime (1266281) and next prime (1266301).

It is not a de Polignac number, because 1266291 - 2⁵ = 1266259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1266241) 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 in 23 ways as a sum of consecutive naturals, for example, 9175 + ... + 9311.

It is an arithmetic number, because the mean of its divisors is an integer number (83720).

2^1266291 is an apocalyptic number.

1266291 is a deficient number, since it is larger than the sum of its proper divisors (742989).

1266291 is a wasteful number, since it uses less digits than its factorization.

1266291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235 (or 232 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 1266291 is about 1125.2959610698. The cubic root of 1266291 is about 108.1876880403.

The spelling of 1266291 in words is "one million, two hundred sixty-six thousand, two hundred ninety-one".