143605 has 16 divisors (see below), whose sum is σ = 215424. Its totient is φ = 89280.

The previous prime is 143593. The next prime is 143609. The reversal of 143605 is 506341.

143605 = T₄₃ + T₄₄ + ... + T₉₇.

143605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 143605 - 2⁵ = 143573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199 + ... + 571.

It is an arithmetic number, because the mean of its divisors is an integer number (13464).

2¹⁴³⁶⁰⁵ is an apocalyptic number.

It is an amenable number.

143605 is a deficient number, since it is larger than the sum of its proper divisors (71819).

143605 is a wasteful number, since it uses less digits than its factorization.

143605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 143605 is about 378.9525036202. The cubic root of 143605 is about 52.3668584015.

Adding to 143605 its reverse (506341), we get a palindrome (649946).

It can be divided in two parts, 14360 and 5, that added together give a triangular number (14365 = T₁₆₉).

The spelling of 143605 in words is "one hundred forty-three thousand, six hundred five".