1200404004 has 12 divisors (see below), whose sum is σ = 2800942704. Its totient is φ = 400134664.

The previous prime is 1200403991. The next prime is 1200404011. The reversal of 1200404004 is 4004040021.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50016822 + ... + 50016845.

It is an arithmetic number, because the mean of its divisors is an integer number (233411892).

Almost surely, 2^1200404004 is an apocalyptic number.

It is an amenable number.

1200404004 is an abundant number, since it is smaller than the sum of its proper divisors (1600538700).

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

1200404004 is a wasteful number, since it uses less digits than its factorization.

1200404004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100033674 (or 100033672 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 1200404004 is about 34646.8469561084. The cubic root of 1200404004 is about 1062.7778108887. Note that the first 3 decimals are identical.

Adding to 1200404004 its reverse (4004040021), we get a palindrome (5204444025).

The spelling of 1200404004 in words is "one billion, two hundred million, four hundred four thousand, four".