204122986 has 4 divisors (see below), whose sum is σ = 306184482. Its totient is φ = 102061492.

The previous prime is 204122977. The next prime is 204123001. The reversal of 204122986 is 689221402.

204122986 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 168350625 + 35772361 = 12975^2 + 5981^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51030745 + ... + 51030748.

Almost surely, 2^204122986 is an apocalyptic number.

204122986 is a deficient number, since it is larger than the sum of its proper divisors (102061496).

204122986 is a wasteful number, since it uses less digits than its factorization.

204122986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102061495.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 204122986 is about 14287.1615795441. The cubic root of 204122986 is about 588.7948068970.

The spelling of 204122986 in words is "two hundred four million, one hundred twenty-two thousand, nine hundred eighty-six".