204124240 has 40 divisors (see below), whose sum is σ = 486172008. Its totient is φ = 79656960.

The previous prime is 204124237. The next prime is 204124273. The reversal of 204124240 is 42421402.

It can be written as a sum of positive squares in 4 ways, for example, as 20684304 + 183439936 = 4548^2 + 13544^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27837 + ... + 34396.

Almost surely, 2^204124240 is an apocalyptic number.

204124240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204124240 is an abundant number, since it is smaller than the sum of its proper divisors (282047768).

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

204124240 is a wasteful number, since it uses less digits than its factorization.

204124240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62287 (or 62281 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 204124240 is about 14287.2054650306. The cubic root of 204124240 is about 588.7960126197.

Adding to 204124240 its reverse (42421402), we get a palindrome (246545642).

The spelling of 204124240 in words is "two hundred four million, one hundred twenty-four thousand, two hundred forty".