1276855 has 4 divisors (see below), whose sum is σ = 1532232. Its totient is φ = 1021480.

The previous prime is 1276829. The next prime is 1276861. The reversal of 1276855 is 5586721.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-1276855 is a prime.

It is a Duffinian number.

1276855 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1276855.

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, 127681 + ... + 127690.

It is an arithmetic number, because the mean of its divisors is an integer number (383058).

2^1276855 is an apocalyptic number.

1276855 is a deficient number, since it is larger than the sum of its proper divisors (255377).

1276855 is an equidigital number, since it uses as much as digits as its factorization.

1276855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255376.

The product of its digits is 16800, while the sum is 34.

The square root of 1276855 is about 1129.9800883201. The cubic root of 1276855 is about 108.4877062812.

It can be divided in two parts, 12 and 76855, that added together give a palindrome (76867).

The spelling of 1276855 in words is "one million, two hundred seventy-six thousand, eight hundred fifty-five".