1204320404040 has 128 divisors (see below), whose sum is σ = 3909322569600. Its totient is φ = 295043051520.

The previous prime is 1204320404039. The next prime is 1204320404047. The reversal of 1204320404040 is 404040234021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1204320404040.

It is not an unprimeable number, because it can be changed into a prime (1204320404047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1500225 + ... + 2158544.

It is an arithmetic number, because the mean of its divisors is an integer number (30541582575).

Almost surely, 2^{1204320404040} is an apocalyptic number.

1204320404040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1204320404040 is an abundant number, since it is smaller than the sum of its proper divisors (2705002165560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1204320404040 is a wasteful number, since it uses less digits than its factorization.

1204320404040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3659007 (or 3659003 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 1204320404040 its reverse (404040234021), we get a palindrome (1608360638061).

The spelling of 1204320404040 in words is "one trillion, two hundred four billion, three hundred twenty million, four hundred four thousand, forty".