1271249 has 4 divisors (see below), whose sum is σ = 1452864. Its totient is φ = 1089636.

The previous prime is 1271239. The next prime is 1271251. The reversal of 1271249 is 9421721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9421721 = 2063 ⋅4567.

It is a cyclic number.

It is not a de Polignac number, because 1271249 - 2¹⁶ = 1205713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1271239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90797 + ... + 90810.

It is an arithmetic number, because the mean of its divisors is an integer number (363216).

2^1271249 is an apocalyptic number.

It is an amenable number.

1271249 is a deficient number, since it is larger than the sum of its proper divisors (181615).

1271249 is an equidigital number, since it uses as much as digits as its factorization.

1271249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181614.

The product of its digits is 1008, while the sum is 26.

The square root of 1271249 is about 1127.4967849178. The cubic root of 1271249 is about 108.3287024976.

The spelling of 1271249 in words is "one million, two hundred seventy-one thousand, two hundred forty-nine".