1265133 has 4 divisors (see below), whose sum is σ = 1686848. Its totient is φ = 843420.

The previous prime is 1265129. The next prime is 1265167. The reversal of 1265133 is 3315621.

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: 3315621 = 3 ⋅1105207.

It is not a de Polignac number, because 1265133 - 2² = 1265129 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265113) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 210853 + ... + 210858.

It is an arithmetic number, because the mean of its divisors is an integer number (421712).

2^1265133 is an apocalyptic number.

It is an amenable number.

1265133 is a deficient number, since it is larger than the sum of its proper divisors (421715).

1265133 is an equidigital number, since it uses as much as digits as its factorization.

1265133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421714.

The product of its digits is 540, while the sum is 21.

The square root of 1265133 is about 1124.7813120780. The cubic root of 1265133 is about 108.1546994272.

The spelling of 1265133 in words is "one million, two hundred sixty-five thousand, one hundred thirty-three".