1271136 has 24 divisors (see below), whose sum is σ = 3336984. Its totient is φ = 423680.

The previous prime is 1271129. The next prime is 1271147. The reversal of 1271136 is 6311721.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6525 + ... + 6716.

It is an arithmetic number, because the mean of its divisors is an integer number (139041).

2^1271136 is an apocalyptic number.

1271136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1271136 is an abundant number, since it is smaller than the sum of its proper divisors (2065848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1271136 is a wasteful number, since it uses less digits than its factorization.

1271136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13254 (or 13246 counting only the distinct ones).

The product of its digits is 252, while the sum is 21.

The square root of 1271136 is about 1127.4466727965. The cubic root of 1271136 is about 108.3254926607.

Adding to 1271136 its reverse (6311721), we get a palindrome (7582857).

The spelling of 1271136 in words is "one million, two hundred seventy-one thousand, one hundred thirty-six".