204210140 has 12 divisors (see below), whose sum is σ = 428841336. Its totient is φ = 81684048.

The previous prime is 204210131. The next prime is 204210163. The reversal of 204210140 is 41012402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5105234 + ... + 5105273.

It is an arithmetic number, because the mean of its divisors is an integer number (35736778).

Almost surely, 2^204210140 is an apocalyptic number.

204210140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204210140 is an abundant number, since it is smaller than the sum of its proper divisors (224631196).

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

204210140 is a wasteful number, since it uses less digits than its factorization.

204210140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10210516 (or 10210514 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 204210140 is about 14290.2113350363. The cubic root of 204210140 is about 588.8785938366.

Adding to 204210140 its reverse (41012402), we get a palindrome (245222542).

The spelling of 204210140 in words is "two hundred four million, two hundred ten thousand, one hundred forty".