1271892 has 24 divisors (see below), whose sum is σ = 3005856. Its totient is φ = 418528.

The previous prime is 1271849. The next prime is 1271903. The reversal of 1271892 is 2981721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358 + ... + 1634.

It is an arithmetic number, because the mean of its divisors is an integer number (125244).

2^1271892 is an apocalyptic number.

1271892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1271892 is an abundant number, since it is smaller than the sum of its proper divisors (1733964).

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

1271892 is a wasteful number, since it uses less digits than its factorization.

1271892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1367 (or 1365 counting only the distinct ones).

The product of its digits is 2016, while the sum is 30.

The square root of 1271892 is about 1127.7818938075. The cubic root of 1271892 is about 108.3469637025.

The spelling of 1271892 in words is "one million, two hundred seventy-one thousand, eight hundred ninety-two".