204042454 has 16 divisors (see below), whose sum is σ = 381586176. Its totient is φ = 79497000.

The previous prime is 204042431. The next prime is 204042491. The reversal of 204042454 is 454240402.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 662322 + ... + 662629.

It is an arithmetic number, because the mean of its divisors is an integer number (23849136).

Almost surely, 2^204042454 is an apocalyptic number.

204042454 is a deficient number, since it is larger than the sum of its proper divisors (177543722).

204042454 is a wasteful number, since it uses less digits than its factorization.

204042454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324971.

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 204042454 is about 14284.3429670391. The cubic root of 204042454 is about 588.7173649237.

Adding to 204042454 its reverse (454240402), we get a palindrome (658282856).

The spelling of 204042454 in words is "two hundred four million, forty-two thousand, four hundred fifty-four".