143604 has 18 divisors (see below), whose sum is σ = 363090. Its totient is φ = 47856.

The previous prime is 143593. The next prime is 143609. The reversal of 143604 is 406341.

It can be written as a sum of positive squares in only one way, i.e., 121104 + 22500 = 348^2 + 150^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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

143604 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1959 + ... + 2030.

2¹⁴³⁶⁰⁴ is an apocalyptic number.

It is an amenable number.

143604 is an abundant number, since it is smaller than the sum of its proper divisors (219486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

143604 is a wasteful number, since it uses less digits than its factorization.

143604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3999 (or 3994 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 143604 is about 378.9511841913. The cubic root of 143604 is about 52.3667368482.

Adding to 143604 its reverse (406341), we get a palindrome (549945).

It can be divided in two parts, 143 and 604, that added together give a palindrome (747).

The spelling of 143604 in words is "one hundred forty-three thousand, six hundred four".