143442289 has 2 divisors, whose sum is σ = 143442290. Its totient is φ = 143442288.

The previous prime is 143442287. The next prime is 143442307. The reversal of 143442289 is 982244341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143041600 + 400689 = 11960^2 + 633^2 .

It is a cyclic number.

It is not a de Polignac number, because 143442289 - 2¹ = 143442287 is a prime.

Together with 143442287, 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 (143442287) 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, 71721144 + 71721145.

It is an arithmetic number, because the mean of its divisors is an integer number (71721145).

Almost surely, 2^143442289 is an apocalyptic number.

It is an amenable number.

143442289 is a deficient number, since it is larger than the sum of its proper divisors (1).

143442289 is an equidigital number, since it uses as much as digits as its factorization.

143442289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55296, while the sum is 37.

The square root of 143442289 is about 11976.7394978767. The cubic root of 143442289 is about 523.4707291577.

The spelling of 143442289 in words is "one hundred forty-three million, four hundred forty-two thousand, two hundred eighty-nine".