1271047 has 2 divisors, whose sum is σ = 1271048. Its totient is φ = 1271046.

The previous prime is 1271033. The next prime is 1271051. The reversal of 1271047 is 7401721.

It is a strong prime.

It is an emirp because it is prime and its reverse (7401721) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1271047 is a prime.

1271047 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1271027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 635523 + 635524.

It is an arithmetic number, because the mean of its divisors is an integer number (635524).

2^1271047 is an apocalyptic number.

1271047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1271047 is an equidigital number, since it uses as much as digits as its factorization.

1271047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 1271047 is about 1127.4072023896. The cubic root of 1271047 is about 108.3229644251.

Adding to 1271047 its reverse (7401721), we get a palindrome (8672768).

The spelling of 1271047 in words is "one million, two hundred seventy-one thousand, forty-seven".