142857289 has 2 divisors, whose sum is σ = 142857290. Its totient is φ = 142857288.

The previous prime is 142857287. The next prime is 142857293. The reversal of 142857289 is 982758241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132066064 + 10791225 = 11492^2 + 3285^2 .

It is an emirp because it is prime and its reverse (982758241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142857289 - 2¹ = 142857287 is a prime.

Together with 142857287, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (142857287) 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, 71428644 + 71428645.

It is an arithmetic number, because the mean of its divisors is an integer number (71428645).

Almost surely, 2^142857289 is an apocalyptic number.

It is an amenable number.

142857289 is a deficient number, since it is larger than the sum of its proper divisors (1).

142857289 is an equidigital number, since it uses as much as digits as its factorization.

142857289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 46.

The square root of 142857289 is about 11952.2922069367. The cubic root of 142857289 is about 522.7581368351.

The spelling of 142857289 in words is "one hundred forty-two million, eight hundred fifty-seven thousand, two hundred eighty-nine".