1204135500 has 96 divisors (see below), whose sum is σ = 3712782528. Its totient is φ = 302208000.

The previous prime is 1204135481. The next prime is 1204135501. The reversal of 1204135500 is 55314021.

It is not an unprimeable number, because it can be changed into a prime (1204135501) 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, 1890 + ... + 49110.

It is an arithmetic number, because the mean of its divisors is an integer number (38674818).

Almost surely, 2^1204135500 is an apocalyptic number.

1204135500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1204135500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1856391264).

1204135500 is an abundant number, since it is smaller than the sum of its proper divisors (2508647028).

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

1204135500 is a wasteful number, since it uses less digits than its factorization.

1204135500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47260 (or 47248 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1204135500 is about 34700.6556134030. The cubic root of 1204135500 is about 1063.8778985802.

Adding to 1204135500 its reverse (55314021), we get a palindrome (1259449521).

The spelling of 1204135500 in words is "one billion, two hundred four million, one hundred thirty-five thousand, five hundred".