1261284204 has 12 divisors (see below), whose sum is σ = 2942996504. Its totient is φ = 420428064.

The previous prime is 1261284203. The next prime is 1261284229. The reversal of 1261284204 is 4024821621.

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

It is not an unprimeable number, because it can be changed into a prime (1261284203) by changing a digit.

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, 52553497 + ... + 52553520.

Almost surely, 2^1261284204 is an apocalyptic number.

It is an amenable number.

1261284204 is an abundant number, since it is smaller than the sum of its proper divisors (1681712300).

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

1261284204 is a wasteful number, since it uses less digits than its factorization.

1261284204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105107024 (or 105107022 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 1261284204 is about 35514.5632663560. The cubic root of 1261284204 is about 1080.4491170501.

The spelling of 1261284204 in words is "one billion, two hundred sixty-one million, two hundred eighty-four thousand, two hundred four".