1156872140 has 12 divisors (see below), whose sum is σ = 2429431536. Its totient is φ = 462748848.

The previous prime is 1156872071. The next prime is 1156872161. The reversal of 1156872140 is 412786511.

It is a self number, because there is not a number n which added to its sum of digits gives 1156872140.

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, 28921784 + ... + 28921823.

It is an arithmetic number, because the mean of its divisors is an integer number (202452628).

Almost surely, 2^1156872140 is an apocalyptic number.

1156872140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1156872140 is an abundant number, since it is smaller than the sum of its proper divisors (1272559396).

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

1156872140 is a wasteful number, since it uses less digits than its factorization.

1156872140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57843616 (or 57843614 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 1156872140 is about 34012.8231700928. The cubic root of 1156872140 is about 1049.7723285665.

The spelling of 1156872140 in words is "one billion, one hundred fifty-six million, eight hundred seventy-two thousand, one hundred forty".