203242004 has 72 divisors (see below), whose sum is σ = 441807912. Its totient is φ = 81285120.

The previous prime is 203241991. The next prime is 203242009. The reversal of 203242004 is 400242302.

It can be written as a sum of positive squares in 4 ways, for example, as 1317904 + 201924100 = 1148^2 + 14210^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203242009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 602924 + ... + 603260.

It is an arithmetic number, because the mean of its divisors is an integer number (6136221).

Almost surely, 2^203242004 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 203242004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220903956).

203242004 is an abundant number, since it is smaller than the sum of its proper divisors (238565908).

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

203242004 is a wasteful number, since it uses less digits than its factorization.

203242004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553 (or 544 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 203242004 is about 14256.2969946617. The cubic root of 203242004 is about 587.9465181894.

Adding to 203242004 its reverse (400242302), we get a palindrome (603484306).

The spelling of 203242004 in words is "two hundred three million, two hundred forty-two thousand, four".