204245049 has 4 divisors (see below), whose sum is σ = 272326736. Its totient is φ = 136163364.

The previous prime is 204245039. The next prime is 204245051. The reversal of 204245049 is 940542402.

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 204245049 - 2¹⁶ = 204179513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204245029) 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 3 ways as a sum of consecutive naturals, for example, 34040839 + ... + 34040844.

It is an arithmetic number, because the mean of its divisors is an integer number (68081684).

Almost surely, 2^204245049 is an apocalyptic number.

It is an amenable number.

204245049 is a deficient number, since it is larger than the sum of its proper divisors (68081687).

204245049 is an equidigital number, since it uses as much as digits as its factorization.

204245049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68081686.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 204245049 is about 14291.4327133426. The cubic root of 204245049 is about 588.9121474945.

The spelling of 204245049 in words is "two hundred four million, two hundred forty-five thousand, forty-nine".