204243130 has 32 divisors (see below), whose sum is σ = 452479104. Its totient is φ = 64639296.

The previous prime is 204243121. The next prime is 204243131. The reversal of 204243130 is 31342402.

It is a junction number, because it is equal to n+sod(n) for n = 204243098 and 204243107.

It is not an unprimeable number, because it can be changed into a prime (204243131) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 111312 + ... + 113131.

It is an arithmetic number, because the mean of its divisors is an integer number (14139972).

Almost surely, 2^204243130 is an apocalyptic number.

204243130 is an abundant number, since it is smaller than the sum of its proper divisors (248235974).

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

204243130 is a wasteful number, since it uses less digits than its factorization.

204243130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224470.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 204243130 is about 14291.3655750596. The cubic root of 204243130 is about 588.9103030990.

Adding to 204243130 its reverse (31342402), we get a palindrome (235585532).

The spelling of 204243130 in words is "two hundred four million, two hundred forty-three thousand, one hundred thirty".