204142005 has 32 divisors (see below), whose sum is σ = 364600320. Its totient is φ = 108371520.

The previous prime is 204141989. The next prime is 204142013. The reversal of 204142005 is 500241402.

It is not a de Polignac number, because 204142005 - 2⁴ = 204141989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26715 + ... + 33495.

It is an arithmetic number, because the mean of its divisors is an integer number (11393760).

Almost surely, 2^204142005 is an apocalyptic number.

It is an amenable number.

204142005 is a deficient number, since it is larger than the sum of its proper divisors (160458315).

204142005 is a wasteful number, since it uses less digits than its factorization.

204142005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7018 (or 7012 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 204142005 is about 14287.8271616086. The cubic root of 204142005 is about 588.8130931613.

Adding to 204142005 its reverse (500241402), we get a palindrome (704383407).

The spelling of 204142005 in words is "two hundred four million, one hundred forty-two thousand, five".