1204040205 has 24 divisors (see below), whose sum is σ = 2135541408. Its totient is φ = 627219936.

The previous prime is 1204040177. The next prime is 1204040207. The reversal of 1204040205 is 5020404021.

It is not a de Polignac number, because 1204040205 - 2⁶ = 1204040141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204040207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 309187 + ... + 313056.

It is an arithmetic number, because the mean of its divisors is an integer number (88980892).

Almost surely, 2^1204040205 is an apocalyptic number.

1204040205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1204040205 is a deficient number, since it is larger than the sum of its proper divisors (931501203).

1204040205 is a wasteful number, since it uses less digits than its factorization.

1204040205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622297 (or 622294 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 1204040205 is about 34699.2824853771. The cubic root of 1204040205 is about 1063.8498328243.

Adding to 1204040205 its reverse (5020404021), we get a palindrome (6224444226).

The spelling of 1204040205 in words is "one billion, two hundred four million, forty thousand, two hundred five".