1230365 has 4 divisors (see below), whose sum is σ = 1476444. Its totient is φ = 984288.

The previous prime is 1230349. The next prime is 1230367. The reversal of 1230365 is 5630321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5630321 = 29 ⋅194149.

It can be written as a sum of positive squares in 2 ways, for example, as 466489 + 763876 = 683^2 + 874^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230365 - 2⁴ = 1230349 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123032 + ... + 123041.

It is an arithmetic number, because the mean of its divisors is an integer number (369111).

2^1230365 is an apocalyptic number.

It is an amenable number.

1230365 is a deficient number, since it is larger than the sum of its proper divisors (246079).

1230365 is an equidigital number, since it uses as much as digits as its factorization.

1230365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246078.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 1230365 is about 1109.2181931433. The cubic root of 1230365 is about 107.1547241882.

Adding to 1230365 its reverse (5630321), we get a palindrome (6860686).

The spelling of 1230365 in words is "one million, two hundred thirty thousand, three hundred sixty-five".