143599 has 4 divisors (see below), whose sum is σ = 152064. Its totient is φ = 135136.

The previous prime is 143593. The next prime is 143609. The reversal of 143599 is 995341.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 143599 - 2⁵ = 143567 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

143599 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 143599.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143593) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4207 + ... + 4240.

It is an arithmetic number, because the mean of its divisors is an integer number (38016).

2¹⁴³⁵⁹⁹ is an apocalyptic number.

143599 is a deficient number, since it is larger than the sum of its proper divisors (8465).

143599 is an equidigital number, since it uses as much as digits as its factorization.

143599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8464.

The product of its digits is 4860, while the sum is 31.

The square root of 143599 is about 378.9445869781. The cubic root of 143599 is about 52.3661290733.

The spelling of 143599 in words is "one hundred forty-three thousand, five hundred ninety-nine".