1242971180 has 48 divisors (see below), whose sum is σ = 2852460576. Its totient is φ = 451207680.

The previous prime is 1242971161. The next prime is 1242971209. The reversal of 1242971180 is 811792421.

It is a self number, because there is not a number n which added to its sum of digits gives 1242971180.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131162 + ... + 140318.

It is an arithmetic number, because the mean of its divisors is an integer number (59426262).

Almost surely, 2^1242971180 is an apocalyptic number.

1242971180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242971180 is an abundant number, since it is smaller than the sum of its proper divisors (1609489396).

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

1242971180 is a wasteful number, since it uses less digits than its factorization.

1242971180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9794 (or 9792 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 1242971180 is about 35255.7964028612. The cubic root of 1242971180 is about 1075.1944641889.

The spelling of 1242971180 in words is "one billion, two hundred forty-two million, nine hundred seventy-one thousand, one hundred eighty".