143530169 has 2 divisors, whose sum is σ = 143530170. Its totient is φ = 143530168.

The previous prime is 143530111. The next prime is 143530171. The reversal of 143530169 is 961035341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114746944 + 28783225 = 10712^2 + 5365^2 .

It is a cyclic number.

It is not a de Polignac number, because 143530169 - 2¹² = 143526073 is a prime.

It is a super-2 number, since 2×143530169² = 41201818826337122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 143530171, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (143530069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71765084 + 71765085.

It is an arithmetic number, because the mean of its divisors is an integer number (71765085).

Almost surely, 2^143530169 is an apocalyptic number.

It is an amenable number.

143530169 is a deficient number, since it is larger than the sum of its proper divisors (1).

143530169 is an equidigital number, since it uses as much as digits as its factorization.

143530169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 143530169 is about 11980.4077142642. The cubic root of 143530169 is about 523.5776088808.

The spelling of 143530169 in words is "one hundred forty-three million, five hundred thirty thousand, one hundred sixty-nine".