1142885159 has 4 divisors (see below), whose sum is σ = 1230799416. Its totient is φ = 1054970904.

The previous prime is 1142885147. The next prime is 1142885189. The reversal of 1142885159 is 9515882411.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1142885159 - 2⁴ = 1142885143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142885189) 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, 43957109 + ... + 43957134.

It is an arithmetic number, because the mean of its divisors is an integer number (307699854).

Almost surely, 2^1142885159 is an apocalyptic number.

1142885159 is a deficient number, since it is larger than the sum of its proper divisors (87914257).

1142885159 is an equidigital number, since it uses as much as digits as its factorization.

1142885159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87914256.

The product of its digits is 115200, while the sum is 44.

The square root of 1142885159 is about 33806.5845509421. The cubic root of 1142885159 is about 1045.5244603822.

The spelling of 1142885159 in words is "one billion, one hundred forty-two million, eight hundred eighty-five thousand, one hundred fifty-nine".