204127105 has 16 divisors (see below), whose sum is σ = 301480704. Its totient is φ = 129205440.

The previous prime is 204127103. The next prime is 204127181. The reversal of 204127105 is 501721402.

It is a happy number.

It is not a de Polignac number, because 204127105 - 2¹ = 204127103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204127103) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 223861 + ... + 224770.

It is an arithmetic number, because the mean of its divisors is an integer number (18842544).

Almost surely, 2^204127105 is an apocalyptic number.

It is an amenable number.

204127105 is a deficient number, since it is larger than the sum of its proper divisors (97353599).

204127105 is a wasteful number, since it uses less digits than its factorization.

204127105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448656.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 204127105 is about 14287.3057292129. The cubic root of 204127105 is about 588.7987673026.

Adding to 204127105 its reverse (501721402), we get a palindrome (705848507).

The spelling of 204127105 in words is "two hundred four million, one hundred twenty-seven thousand, one hundred five".