1271871 has 6 divisors (see below), whose sum is σ = 1837160. Its totient is φ = 847908.

The previous prime is 1271849. The next prime is 1271903. The reversal of 1271871 is 1781721.

It is not a de Polignac number, because 1271871 - 2⁵ = 1271839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1271471) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 70651 + ... + 70668.

2^1271871 is an apocalyptic number.

1271871 is a deficient number, since it is larger than the sum of its proper divisors (565289).

1271871 is a wasteful number, since it uses less digits than its factorization.

1271871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141325 (or 141322 counting only the distinct ones).

The product of its digits is 784, while the sum is 27.

The square root of 1271871 is about 1127.7725834582. The cubic root of 1271871 is about 108.3463673995.

The spelling of 1271871 in words is "one million, two hundred seventy-one thousand, eight hundred seventy-one".