1273265 has 12 divisors (see below), whose sum is σ = 1777716. Its totient is φ = 872928.

The previous prime is 1273241. The next prime is 1273267. The reversal of 1273265 is 5623721.

It can be written as a sum of positive squares in 2 ways, for example, as 519841 + 753424 = 721^2 + 868^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1273265 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1273267) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2354 + ... + 2843.

It is an arithmetic number, because the mean of its divisors is an integer number (148143).

2^1273265 is an apocalyptic number.

It is an amenable number.

1273265 is a deficient number, since it is larger than the sum of its proper divisors (504451).

1273265 is an equidigital number, since it uses as much as digits as its factorization.

1273265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5216 (or 5209 counting only the distinct ones).

The product of its digits is 2520, while the sum is 26.

The square root of 1273265 is about 1128.3904466097. The cubic root of 1273265 is about 108.3859363208.

Adding to 1273265 its reverse (5623721), we get a palindrome (6896986).

The spelling of 1273265 in words is "one million, two hundred seventy-three thousand, two hundred sixty-five".