204234241243 has 4 divisors (see below), whose sum is σ = 204272919928. Its totient is φ = 204195562560.

The previous prime is 204234241217. The next prime is 204234241271. The reversal of 204234241243 is 342142432402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204234241243 is a prime.

It is a super-2 number, since 2×204234241243² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204234241543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19331421 + ... + 19341982.

It is an arithmetic number, because the mean of its divisors is an integer number (51068229982).

Almost surely, 2^204234241243 is an apocalyptic number.

204234241243 is a deficient number, since it is larger than the sum of its proper divisors (38678685).

204234241243 is an equidigital number, since it uses as much as digits as its factorization.

204234241243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38678684.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 204234241243 its reverse (342142432402), we get a palindrome (546376673645).

The spelling of 204234241243 in words is "two hundred four billion, two hundred thirty-four million, two hundred forty-one thousand, two hundred forty-three".