1273456 has 40 divisors (see below), whose sum is σ = 2678400. Its totient is φ = 584640.

The previous prime is 1273423. The next prime is 1273457. The reversal of 1273456 is 6543721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1273457) 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 7 ways as a sum of consecutive naturals, for example, 17901 + ... + 17971.

It is an arithmetic number, because the mean of its divisors is an integer number (66960).

2^1273456 is an apocalyptic number.

1273456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1273456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1339200).

1273456 is an abundant number, since it is smaller than the sum of its proper divisors (1404944).

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

1273456 is a wasteful number, since it uses less digits than its factorization.

1273456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 151 counting only the distinct ones).

The product of its digits is 5040, while the sum is 28.

The square root of 1273456 is about 1128.4750772613. The cubic root of 1273456 is about 108.3913556375.

The spelling of 1273456 in words is "one million, two hundred seventy-three thousand, four hundred fifty-six".