204143004 has 120 divisors (see below), whose sum is σ = 608742288. Its totient is φ = 59097600.

The previous prime is 204142997. The next prime is 204143033. The reversal of 204143004 is 400341402.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 70179 + ... + 73029.

Almost surely, 2^204143004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204143004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304371144).

204143004 is an abundant number, since it is smaller than the sum of its proper divisors (404599284).

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

204143004 is a wasteful number, since it uses less digits than its factorization.

204143004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2897 (or 2886 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 204143004 is about 14287.8621213952. The cubic root of 204143004 is about 588.8140536419.

Adding to 204143004 its reverse (400341402), we get a palindrome (604484406).

The spelling of 204143004 in words is "two hundred four million, one hundred forty-three thousand, four".