204242473 has 4 divisors (see below), whose sum is σ = 204799360. Its totient is φ = 203685588.

The previous prime is 204242459. The next prime is 204242497. The reversal of 204242473 is 374242402.

204242473 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204242473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204242173) 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, 277893 + ... + 278626.

It is an arithmetic number, because the mean of its divisors is an integer number (51199840).

Almost surely, 2^204242473 is an apocalyptic number.

It is an amenable number.

204242473 is a deficient number, since it is larger than the sum of its proper divisors (556887).

204242473 is an equidigital number, since it uses as much as digits as its factorization.

204242473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556886.

The product of its (nonzero) digits is 10752, while the sum is 28.

The square root of 204242473 is about 14291.3425891342. The cubic root of 204242473 is about 588.9096716384.

Adding to 204242473 its reverse (374242402), we get a palindrome (578484875).

The spelling of 204242473 in words is "two hundred four million, two hundred forty-two thousand, four hundred seventy-three".