1267291 has 2 divisors, whose sum is σ = 1267292. Its totient is φ = 1267290.

The previous prime is 1267237. The next prime is 1267297. The reversal of 1267291 is 1927621.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1267291 - 2⁹ = 1266779 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1267297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633645 + 633646.

It is an arithmetic number, because the mean of its divisors is an integer number (633646).

2^1267291 is an apocalyptic number.

1267291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1267291 is an equidigital number, since it uses as much as digits as its factorization.

1267291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 28.

The square root of 1267291 is about 1125.7402009345. The cubic root of 1267291 is about 108.2161594373.

The spelling of 1267291 in words is "one million, two hundred sixty-seven thousand, two hundred ninety-one".