1271392 has 24 divisors (see below), whose sum is σ = 2544696. Its totient is φ = 625152.

The previous prime is 1271383. The next prime is 1271393. The reversal of 1271392 is 2931721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1271393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1848 + ... + 2440.

It is an arithmetic number, because the mean of its divisors is an integer number (106029).

2^1271392 is an apocalyptic number.

It is an amenable number.

1271392 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

1271392 is an equidigital number, since it uses as much as digits as its factorization.

1271392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 662 counting only the distinct ones).

The product of its digits is 756, while the sum is 25.

The square root of 1271392 is about 1127.5601979495. The cubic root of 1271392 is about 108.3327642311.

The spelling of 1271392 in words is "one million, two hundred seventy-one thousand, three hundred ninety-two".