143342989 has 2 divisors, whose sum is σ = 143342990. Its totient is φ = 143342988.

The previous prime is 143342981. The next prime is 143343001. The reversal of 143342989 is 989243341.

143342989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139004100 + 4338889 = 11790^2 + 2083^2 .

It is a cyclic number.

It is not a de Polignac number, because 143342989 - 2³ = 143342981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143342981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71671494 + 71671495.

It is an arithmetic number, because the mean of its divisors is an integer number (71671495).

Almost surely, 2^143342989 is an apocalyptic number.

It is an amenable number.

143342989 is a deficient number, since it is larger than the sum of its proper divisors (1).

143342989 is an equidigital number, since it uses as much as digits as its factorization.

143342989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 43.

The square root of 143342989 is about 11972.5932445732. The cubic root of 143342989 is about 523.3499078779.

The spelling of 143342989 in words is "one hundred forty-three million, three hundred forty-two thousand, nine hundred eighty-nine".