204642122 has 8 divisors (see below), whose sum is σ = 323119200. Its totient is φ = 96935724.

The previous prime is 204642091. The next prime is 204642157. The reversal of 204642122 is 221246402.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 2692622 + ... + 2692697.

It is an arithmetic number, because the mean of its divisors is an integer number (40389900).

Almost surely, 2^204642122 is an apocalyptic number.

204642122 is a deficient number, since it is larger than the sum of its proper divisors (118477078).

204642122 is a wasteful number, since it uses less digits than its factorization.

204642122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5385340.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 204642122 is about 14305.3179622125. The cubic root of 204642122 is about 589.2935353435.

Adding to 204642122 its reverse (221246402), we get a palindrome (425888524).

The spelling of 204642122 in words is "two hundred four million, six hundred forty-two thousand, one hundred twenty-two".