204861942 has 12 divisors (see below), whose sum is σ = 443867580. Its totient is φ = 68287308.

The previous prime is 204861941. The next prime is 204861977. The reversal of 204861942 is 249168402.

It is a super-3 number, since 3×204861942³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 204861897 and 204861906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204861941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5690592 + ... + 5690627.

It is an arithmetic number, because the mean of its divisors is an integer number (36988965).

Almost surely, 2^204861942 is an apocalyptic number.

204861942 is an abundant number, since it is smaller than the sum of its proper divisors (239005638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204861942 is a wasteful number, since it uses less digits than its factorization.

204861942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11381227 (or 11381224 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 204861942 is about 14312.9990568015. Note that the first 3 decimals coincide. The cubic root of 204861942 is about 589.5044599066.

The spelling of 204861942 in words is "two hundred four million, eight hundred sixty-one thousand, nine hundred forty-two".