1272566 has 4 divisors (see below), whose sum is σ = 1908852. Its totient is φ = 636282.

The previous prime is 1272559. The next prime is 1272577. The reversal of 1272566 is 6652721.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 318140 + ... + 318143.

It is an arithmetic number, because the mean of its divisors is an integer number (477213).

2^1272566 is an apocalyptic number.

1272566 is a deficient number, since it is larger than the sum of its proper divisors (636286).

1272566 is an equidigital number, since it uses as much as digits as its factorization.

1272566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636285.

The product of its digits is 5040, while the sum is 29.

The square root of 1272566 is about 1128.0806708742. The cubic root of 1272566 is about 108.3660987019.

The spelling of 1272566 in words is "one million, two hundred seventy-two thousand, five hundred sixty-six".