142816589 has 2 divisors, whose sum is σ = 142816590. Its totient is φ = 142816588.

The previous prime is 142816577. The next prime is 142816669. The reversal of 142816589 is 985618241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141015625 + 1800964 = 11875^2 + 1342^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142816589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142816789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71408294 + 71408295.

It is an arithmetic number, because the mean of its divisors is an integer number (71408295).

Almost surely, 2^142816589 is an apocalyptic number.

It is an amenable number.

142816589 is a deficient number, since it is larger than the sum of its proper divisors (1).

142816589 is an equidigital number, since it uses as much as digits as its factorization.

142816589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 44.

The square root of 142816589 is about 11950.5894833686. The cubic root of 142816589 is about 522.7084875729.

The spelling of 142816589 in words is "one hundred forty-two million, eight hundred sixteen thousand, five hundred eighty-nine".