1276457 has 16 divisors (see below), whose sum is σ = 1599360. Its totient is φ = 997776.

The previous prime is 1276447. The next prime is 1276481. The reversal of 1276457 is 7546721.

It is not a de Polignac number, because 1276457 - 2⁴ = 1276441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1276447) 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 15 ways as a sum of consecutive naturals, for example, 15338 + ... + 15420.

It is an arithmetic number, because the mean of its divisors is an integer number (99960).

2^1276457 is an apocalyptic number.

It is an amenable number.

1276457 is a deficient number, since it is larger than the sum of its proper divisors (322903).

1276457 is an frugal number, since it uses more digits than its factorization.

1276457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129 (or 103 counting only the distinct ones).

The product of its digits is 11760, while the sum is 32.

The square root of 1276457 is about 1129.8039652966. The cubic root of 1276457 is about 108.4764331155.

It can be divided in two parts, 12764 and 57, that added together give a palindrome (12821).

The spelling of 1276457 in words is "one million, two hundred seventy-six thousand, four hundred fifty-seven".