1271087 has 2 divisors, whose sum is σ = 1271088. Its totient is φ = 1271086.

The previous prime is 1271069. The next prime is 1271089. The reversal of 1271087 is 7801721.

It is a strong prime.

It is an emirp because it is prime and its reverse (7801721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1271087 - 2¹⁰ = 1270063 is a prime.

Together with 1271089, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1271089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 635543 + 635544.

It is an arithmetic number, because the mean of its divisors is an integer number (635544).

2^1271087 is an apocalyptic number.

1271087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1271087 is an equidigital number, since it uses as much as digits as its factorization.

1271087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 784, while the sum is 26.

The square root of 1271087 is about 1127.4249420693. The cubic root of 1271087 is about 108.3241007253.

The spelling of 1271087 in words is "one million, two hundred seventy-one thousand, eighty-seven".