204023124 has 30 divisors (see below), whose sum is σ = 533357594. Its totient is φ = 68007600.

The previous prime is 204023119. The next prime is 204023189. The reversal of 204023124 is 421320402.

It can be written as a sum of positive squares in only one way, i.e., 194100624 + 9922500 = 13932^2 + 3150^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 204023097 and 204023106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 314527 + ... + 315174.

Almost surely, 2^204023124 is an apocalyptic number.

It is an amenable number.

204023124 is an abundant number, since it is smaller than the sum of its proper divisors (329334470).

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

204023124 is a wasteful number, since it uses less digits than its factorization.

204023124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629717 (or 629706 counting only the distinct ones).

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

The square root of 204023124 is about 14283.6663360637. Note that the first 3 decimals coincide. The cubic root of 204023124 is about 588.6987735867.

Adding to 204023124 its reverse (421320402), we get a palindrome (625343526).

The spelling of 204023124 in words is "two hundred four million, twenty-three thousand, one hundred twenty-four".