1200531204 has 36 divisors (see below), whose sum is σ = 3048304896. Its totient is φ = 398379888.

The previous prime is 1200531187. The next prime is 1200531221. The reversal of 1200531204 is 4021350021.

It is an interprime number because it is at equal distance from previous prime (1200531187) and next prime (1200531221).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66744 + ... + 82799.

It is an arithmetic number, because the mean of its divisors is an integer number (84675136).

Almost surely, 2^1200531204 is an apocalyptic number.

It is an amenable number.

1200531204 is an abundant number, since it is smaller than the sum of its proper divisors (1847773692).

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

1200531204 is a wasteful number, since it uses less digits than its factorization.

1200531204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149776 (or 149771 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1200531204 is about 34648.6825723576. The cubic root of 1200531204 is about 1062.8153484073.

Adding to 1200531204 its reverse (4021350021), we get a palindrome (5221881225).

The spelling of 1200531204 in words is "one billion, two hundred million, five hundred thirty-one thousand, two hundred four".