1205383 has 4 divisors (see below), whose sum is σ = 1208088. Its totient is φ = 1202680.

The previous prime is 1205377. The next prime is 1205387. The reversal of 1205383 is 3835021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1205383 - 2⁹ = 1204871 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

1205383 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205387) 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, 508 + ... + 1633.

It is an arithmetic number, because the mean of its divisors is an integer number (302022).

2^1205383 is an apocalyptic number.

1205383 is a deficient number, since it is larger than the sum of its proper divisors (2705).

1205383 is an equidigital number, since it uses as much as digits as its factorization.

1205383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2704.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1205383 is about 1097.8993578648. The cubic root of 1205383 is about 106.4245168879.

The spelling of 1205383 in words is "one million, two hundred five thousand, three hundred eighty-three".