1205131204 has 12 divisors (see below), whose sum is σ = 2160418428. Its totient is φ = 587868800.

The previous prime is 1205131177. The next prime is 1205131217. The reversal of 1205131204 is 4021315021.

It can be written as a sum of positive squares in 2 ways, for example, as 223562304 + 981568900 = 14952^2 + 31330^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3674017 + ... + 3674344.

It is an arithmetic number, because the mean of its divisors is an integer number (180034869).

Almost surely, 2^1205131204 is an apocalyptic number.

It is an amenable number.

1205131204 is a deficient number, since it is larger than the sum of its proper divisors (955287224).

1205131204 is a wasteful number, since it uses less digits than its factorization.

1205131204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7348406 (or 7348404 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1205131204 is about 34714.9996975371. Note that the first 3 decimals coincide. The cubic root of 1205131204 is about 1064.1710592838.

Adding to 1205131204 its reverse (4021315021), we get a palindrome (5226446225).

The spelling of 1205131204 in words is "one billion, two hundred five million, one hundred thirty-one thousand, two hundred four".