1276491 has 8 divisors (see below), whose sum is σ = 1707520. Its totient is φ = 848232.

The previous prime is 1276481. The next prime is 1276501. The reversal of 1276491 is 1946721.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1276481) and next prime (1276501).

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

It is not a de Polignac number, because 1276491 - 2⁹ = 1275979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1276441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 930 + ... + 1848.

It is an arithmetic number, because the mean of its divisors is an integer number (213440).

2^1276491 is an apocalyptic number.

1276491 is a deficient number, since it is larger than the sum of its proper divisors (431029).

1276491 is an equidigital number, since it uses as much as digits as its factorization.

1276491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385.

The product of its digits is 3024, while the sum is 30.

The square root of 1276491 is about 1129.8190120546. The cubic root of 1276491 is about 108.4773962413.

The spelling of 1276491 in words is "one million, two hundred seventy-six thousand, four hundred ninety-one".