1272265 has 8 divisors (see below), whose sum is σ = 1555848. Its totient is φ = 998400.

The previous prime is 1272253. The next prime is 1272269. The reversal of 1272265 is 5622721.

It can be written as a sum of positive squares in 4 ways, for example, as 266256 + 1006009 = 516^2 + 1003^2 .

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

It is not a de Polignac number, because 1272265 - 2⁵ = 1272233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1272269) 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 7 ways as a sum of consecutive naturals, for example, 2136 + ... + 2665.

It is an arithmetic number, because the mean of its divisors is an integer number (194481).

2^1272265 is an apocalyptic number.

It is an amenable number.

1272265 is a deficient number, since it is larger than the sum of its proper divisors (283583).

1272265 is an equidigital number, since it uses as much as digits as its factorization.

1272265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4859.

The product of its digits is 1680, while the sum is 25.

The square root of 1272265 is about 1127.9472505397. The cubic root of 1272265 is about 108.3575540847.

Adding to 1272265 its reverse (5622721), we get a palindrome (6894986).

The spelling of 1272265 in words is "one million, two hundred seventy-two thousand, two hundred sixty-five".