1142727589 has 4 divisors (see below), whose sum is σ = 1144106860. Its totient is φ = 1141348320.

The previous prime is 1142727527. The next prime is 1142727601. The reversal of 1142727589 is 9857272411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9857272411 = 7 ⋅1408181773.

It can be written as a sum of positive squares in 2 ways, for example, as 384826689 + 757900900 = 19617^2 + 27530^2 .

It is a cyclic number.

It is not a de Polignac number, because 1142727589 - 2⁷ = 1142727461 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 (1142727389) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 688392 + ... + 690049.

It is an arithmetic number, because the mean of its divisors is an integer number (286026715).

Almost surely, 2^1142727589 is an apocalyptic number.

It is an amenable number.

1142727589 is a deficient number, since it is larger than the sum of its proper divisors (1379271).

1142727589 is an equidigital number, since it uses as much as digits as its factorization.

1142727589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379270.

The product of its digits is 282240, while the sum is 46.

The square root of 1142727589 is about 33804.2540074471. The cubic root of 1142727589 is about 1045.4764092257.

The spelling of 1142727589 in words is "one billion, one hundred forty-two million, seven hundred twenty-seven thousand, five hundred eighty-nine".