11421265 has 8 divisors (see below), whose sum is σ = 13847400. Its totient is φ = 9042432.

The previous prime is 11421257. The next prime is 11421269. The reversal of 11421265 is 56212411.

It can be written as a sum of positive squares in 4 ways, for example, as 77841 + 11343424 = 279^2 + 3368^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 11421265 - 2³ = 11421257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11421269) 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, 11290 + ... + 12259.

It is an arithmetic number, because the mean of its divisors is an integer number (1730925).

Almost surely, 2^11421265 is an apocalyptic number.

It is an amenable number.

11421265 is a deficient number, since it is larger than the sum of its proper divisors (2426135).

11421265 is an equidigital number, since it uses as much as digits as its factorization.

11421265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23651.

The product of its digits is 480, while the sum is 22.

The square root of 11421265 is about 3379.5362107840. The cubic root of 11421265 is about 225.2015642325.

Adding to 11421265 its reverse (56212411), we get a palindrome (67633676).

The spelling of 11421265 in words is "eleven million, four hundred twenty-one thousand, two hundred sixty-five".