1271271 has 8 divisors (see below), whose sum is σ = 1784320. Its totient is φ = 802872.

The previous prime is 1271251. The next prime is 1271293. The reversal of 1271271 is 1721721.

1271271 = T₂₆ + T₂₇ + ... + T₁₉₆.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1271271 - 2⁵ = 1271239 is a prime.

It is a super-2 number, since 2×1271271² = 3232259910882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1271201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11095 + ... + 11208.

It is an arithmetic number, because the mean of its divisors is an integer number (223040).

2^1271271 is an apocalyptic number.

1271271 is a deficient number, since it is larger than the sum of its proper divisors (513049).

1271271 is a wasteful number, since it uses less digits than its factorization.

1271271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22325.

The product of its digits is 196, while the sum is 21.

The square root of 1271271 is about 1127.5065410010. The cubic root of 1271271 is about 108.3293273995.

Adding to 1271271 its reverse (1721721), we get a palindrome (2992992).

The spelling of 1271271 in words is "one million, two hundred seventy-one thousand, two hundred seventy-one".