1321265 has 8 divisors (see below), whose sum is σ = 1729728. Its totient is φ = 960880.

The previous prime is 1321259. The next prime is 1321267. The reversal of 1321265 is 5621231.

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

It is not a de Polignac number, because 1321265 - 2⁴ = 1321249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1321267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11957 + ... + 12066.

It is an arithmetic number, because the mean of its divisors is an integer number (216216).

2^1321265 is an apocalyptic number.

It is an amenable number.

1321265 is a deficient number, since it is larger than the sum of its proper divisors (408463).

1321265 is a wasteful number, since it uses less digits than its factorization.

1321265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24039.

The product of its digits is 360, while the sum is 20.

The square root of 1321265 is about 1149.4629180622. The cubic root of 1321265 is about 109.7311616803.

Adding to 1321265 its reverse (5621231), we get a palindrome (6942496).

The spelling of 1321265 in words is "one million, three hundred twenty-one thousand, two hundred sixty-five".