143569 has 2 divisors, whose sum is σ = 143570. Its totient is φ = 143568.

The previous prime is 143567. The next prime is 143573. The reversal of 143569 is 965341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97344 + 46225 = 312^2 + 215^2 .

It is a cyclic number.

It is not a de Polignac number, because 143569 - 2¹ = 143567 is a prime.

It is a super-2 number, since 2×143569² = 41224115522, which contains 22 as substring.

Together with 143567, 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 (143567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71784 + 71785.

It is an arithmetic number, because the mean of its divisors is an integer number (71785).

2¹⁴³⁵⁶⁹ is an apocalyptic number.

It is an amenable number.

143569 is a deficient number, since it is larger than the sum of its proper divisors (1).

143569 is an equidigital number, since it uses as much as digits as its factorization.

143569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 28.

The square root of 143569 is about 378.9050012866. The cubic root of 143569 is about 52.3624821275.

It can be divided in two parts, 14356 and 9, that added together give a triangular number (14365 = T₁₆₉).

The spelling of 143569 in words is "one hundred forty-three thousand, five hundred sixty-nine".