1161242812 has 12 divisors (see below), whose sum is σ = 2034025056. Its totient is φ = 580092800.

The previous prime is 1161242759. The next prime is 1161242813. The reversal of 1161242812 is 2182421611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161242813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127189 + ... + 136012.

It is an arithmetic number, because the mean of its divisors is an integer number (169502088).

Almost surely, 2^1161242812 is an apocalyptic number.

It is an amenable number.

1161242812 is a deficient number, since it is larger than the sum of its proper divisors (872782244).

1161242812 is a wasteful number, since it uses less digits than its factorization.

1161242812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264308 (or 264306 counting only the distinct ones).

The product of its digits is 1536, while the sum is 28.

The square root of 1161242812 is about 34077.0129559502. The cubic root of 1161242812 is about 1051.0926832145.

The spelling of 1161242812 in words is "one billion, one hundred sixty-one million, two hundred forty-two thousand, eight hundred twelve".