204243243 has 8 divisors (see below), whose sum is σ = 284164608. Its totient is φ = 130242024.

The previous prime is 204243241. The next prime is 204243251. The reversal of 204243243 is 342342402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 204243243 - 2¹ = 204243241 is a prime.

It is a super-2 number, since 2×204243243² = 83430604622314098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (204243241) 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 7 ways as a sum of consecutive naturals, for example, 1479955 + ... + 1480092.

It is an arithmetic number, because the mean of its divisors is an integer number (35520576).

Almost surely, 2^204243243 is an apocalyptic number.

204243243 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

204243243 is a deficient number, since it is larger than the sum of its proper divisors (79921365).

204243243 is a wasteful number, since it uses less digits than its factorization.

204243243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2960073.

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 204243243 is about 14291.3695284952. The cubic root of 204243243 is about 588.9104117063.

Adding to 204243243 its reverse (342342402), we get a palindrome (546585645).

The spelling of 204243243 in words is "two hundred four million, two hundred forty-three thousand, two hundred forty-three".