1276221 has 8 divisors (see below), whose sum is σ = 1712160. Its totient is φ = 845552.

The previous prime is 1276213. The next prime is 1276237. The reversal of 1276221 is 1226721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1276221 - 2³ = 1276213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1276271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 711 + ... + 1748.

It is an arithmetic number, because the mean of its divisors is an integer number (214020).

2^1276221 is an apocalyptic number.

It is an amenable number.

1276221 is a deficient number, since it is larger than the sum of its proper divisors (435939).

1276221 is a wasteful number, since it uses less digits than its factorization.

1276221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2635.

The product of its digits is 336, while the sum is 21.

The square root of 1276221 is about 1129.6995175709. The cubic root of 1276221 is about 108.4697474180.

The spelling of 1276221 in words is "one million, two hundred seventy-six thousand, two hundred twenty-one".