1204402005 has 24 divisors (see below), whose sum is σ = 2114062080. Its totient is φ = 634214880.

The previous prime is 1204401971. The next prime is 1204402013. The reversal of 1204402005 is 5002044021.

1204402005 is a `hidden beast` number, since 1 + 20 + 440 + 200 + 5 = 666.

It is not a de Polignac number, because 1204402005 - 2⁹ = 1204401493 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 165841 + ... + 172950.

It is an arithmetic number, because the mean of its divisors is an integer number (88085920).

Almost surely, 2^1204402005 is an apocalyptic number.

1204402005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1204402005 is a deficient number, since it is larger than the sum of its proper divisors (909660075).

1204402005 is a wasteful number, since it uses less digits than its factorization.

1204402005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338881 (or 338878 counting only the distinct ones).

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

The square root of 1204402005 is about 34704.4954580815. The cubic root of 1204402005 is about 1063.9563802972.

Adding to 1204402005 its reverse (5002044021), we get a palindrome (6206446026).

The spelling of 1204402005 in words is "one billion, two hundred four million, four hundred two thousand, five".