1142871161 has 8 divisors (see below), whose sum is σ = 1161208800. Its totient is φ = 1124655840.

The previous prime is 1142871139. The next prime is 1142871181. The reversal of 1142871161 is 1611782411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1142871161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142871101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11651 + ... + 49208.

It is an arithmetic number, because the mean of its divisors is an integer number (145151100).

Almost surely, 2^1142871161 is an apocalyptic number.

It is an amenable number.

1142871161 is a deficient number, since it is larger than the sum of its proper divisors (18337639).

1142871161 is an equidigital number, since it uses as much as digits as its factorization.

1142871161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61159.

The product of its digits is 2688, while the sum is 32.

The square root of 1142871161 is about 33806.3775196338. The cubic root of 1142871161 is about 1045.5201918545.

The spelling of 1142871161 in words is "one billion, one hundred forty-two million, eight hundred seventy-one thousand, one hundred sixty-one".