204243041001 has 4 divisors (see below), whose sum is σ = 272324054672. Its totient is φ = 136162027332.

The previous prime is 204243040987. The next prime is 204243041059. The reversal of 204243041001 is 100140342402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 204243041001 - 2⁷ = 204243040873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204243041501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34040506831 + ... + 34040506836.

It is an arithmetic number, because the mean of its divisors is an integer number (68081013668).

Almost surely, 2^204243041001 is an apocalyptic number.

It is an amenable number.

204243041001 is a deficient number, since it is larger than the sum of its proper divisors (68081013671).

204243041001 is an equidigital number, since it uses as much as digits as its factorization.

204243041001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68081013670.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 204243041001 its reverse (100140342402), we get a palindrome (304383383403).

The spelling of 204243041001 in words is "two hundred four billion, two hundred forty-three million, forty-one thousand, one".