1272769 has 4 divisors (see below), whose sum is σ = 1288960. Its totient is φ = 1256580.

The previous prime is 1272749. The next prime is 1272811. The reversal of 1272769 is 9672721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9672721 = 43 ⋅224947.

It is a cyclic number.

It is not a de Polignac number, because 1272769 - 2⁷ = 1272641 is a prime.

It is a super-2 number, since 2×1272769² = 3239881854722, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1272749) 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 3 ways as a sum of consecutive naturals, for example, 7977 + ... + 8134.

It is an arithmetic number, because the mean of its divisors is an integer number (322240).

2^1272769 is an apocalyptic number.

It is an amenable number.

1272769 is a deficient number, since it is larger than the sum of its proper divisors (16191).

1272769 is an equidigital number, since it uses as much as digits as its factorization.

1272769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16190.

The product of its digits is 10584, while the sum is 34.

The square root of 1272769 is about 1128.1706431210. The cubic root of 1272769 is about 108.3718605899.

The spelling of 1272769 in words is "one million, two hundred seventy-two thousand, seven hundred sixty-nine".