205040120 has 16 divisors (see below), whose sum is σ = 461340360. Its totient is φ = 82016032.

The previous prime is 205040117. The next prime is 205040159. The reversal of 205040120 is 21040502.

205040120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×205040120² = 84082901619228800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 205040095 and 205040104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2562962 + ... + 2563041.

Almost surely, 2^205040120 is an apocalyptic number.

205040120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205040120 is an abundant number, since it is smaller than the sum of its proper divisors (256300240).

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

205040120 is a wasteful number, since it uses less digits than its factorization.

205040120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5126014 (or 5126010 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 205040120 is about 14319.2220459074. Note that the first 3 decimals coincide. The cubic root of 205040120 is about 589.6753169036.

Adding to 205040120 its reverse (21040502), we get a palindrome (226080622).

The spelling of 205040120 in words is "two hundred five million, forty thousand, one hundred twenty".