1204403243 has 4 divisors (see below), whose sum is σ = 1236954720. Its totient is φ = 1171851768.

The previous prime is 1204403237. The next prime is 1204403261. The reversal of 1204403243 is 3423044021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3423044021 = 29851 ⋅114671.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1204403243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1204403443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16275683 + ... + 16275756.

It is an arithmetic number, because the mean of its divisors is an integer number (309238680).

Almost surely, 2^1204403243 is an apocalyptic number.

1204403243 is a deficient number, since it is larger than the sum of its proper divisors (32551477).

1204403243 is an equidigital number, since it uses as much as digits as its factorization.

1204403243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32551476.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 1204403243 is about 34704.5132943829. The cubic root of 1204403243 is about 1063.9567448426.

Adding to 1204403243 its reverse (3423044021), we get a palindrome (4627447264).

The spelling of 1204403243 in words is "one billion, two hundred four million, four hundred three thousand, two hundred forty-three".