1267091 has 12 divisors (see below), whose sum is σ = 1552680. Its totient is φ = 1028160.

The previous prime is 1267067. The next prime is 1267103. The reversal of 1267091 is 1907621.

It is a de Polignac number, because none of the positive numbers 2^k-1267091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1267091.

It is not an unprimeable number, because it can be changed into a prime (1267051) 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 11 ways as a sum of consecutive naturals, for example, 251 + ... + 1611.

It is an arithmetic number, because the mean of its divisors is an integer number (129390).

2^1267091 is an apocalyptic number.

1267091 is a deficient number, since it is larger than the sum of its proper divisors (285589).

1267091 is a wasteful number, since it uses less digits than its factorization.

1267091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1394 (or 1387 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 1267091 is about 1125.6513669871. The cubic root of 1267091 is about 108.2104663565.

The spelling of 1267091 in words is "one million, two hundred sixty-seven thousand, ninety-one".