1142757889 has 12 divisors (see below), whose sum is σ = 1414200576. Its totient is φ = 904159152.

The previous prime is 1142757877. The next prime is 1142757899. The reversal of 1142757889 is 9887572411.

It is not a de Polignac number, because 1142757889 - 2⁹ = 1142757377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142757899) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 481809 + ... + 484174.

It is an arithmetic number, because the mean of its divisors is an integer number (117850048).

Almost surely, 2^1142757889 is an apocalyptic number.

It is an amenable number.

1142757889 is a deficient number, since it is larger than the sum of its proper divisors (271442687).

1142757889 is an equidigital number, since it uses as much as digits as its factorization.

1142757889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966016 (or 966003 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 52.

The square root of 1142757889 is about 33804.7021729226. The cubic root of 1142757889 is about 1045.4856495893.

The spelling of 1142757889 in words is "one billion, one hundred forty-two million, seven hundred fifty-seven thousand, eight hundred eighty-nine".