142589 has 2 divisors, whose sum is σ = 142590. Its totient is φ = 142588.

The previous prime is 142573. The next prime is 142591. The reversal of 142589 is 985241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80089 + 62500 = 283^2 + 250^2 .

It is a cyclic number.

It is not a de Polignac number, because 142589 - 2⁴ = 142573 is a prime.

It is a Sophie Germain prime.

Together with 142591, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 142589.

It is not a weakly prime, because it can be changed into another prime (142529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71294 + 71295.

It is an arithmetic number, because the mean of its divisors is an integer number (71295).

2¹⁴²⁵⁸⁹ is an apocalyptic number.

It is an amenable number.

142589 is a deficient number, since it is larger than the sum of its proper divisors (1).

142589 is an equidigital number, since it uses as much as digits as its factorization.

142589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 29.

The square root of 142589 is about 377.6095867427. The cubic root of 142589 is about 52.2430681493.

It can be divided in two parts, 142 and 589, that multiplied together give a palindrome (83638).

The spelling of 142589 in words is "one hundred forty-two thousand, five hundred eighty-nine".