205241020 has 12 divisors (see below), whose sum is σ = 431006184. Its totient is φ = 82096400.

The previous prime is 205240913. The next prime is 205241041. The reversal of 205241020 is 20142502.

It is a junction number, because it is equal to n+sod(n) for n = 205240985 and 205241003.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5131006 + ... + 5131045.

It is an arithmetic number, because the mean of its divisors is an integer number (35917182).

Almost surely, 2^205241020 is an apocalyptic number.

205241020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205241020 is an abundant number, since it is smaller than the sum of its proper divisors (225765164).

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

205241020 is a wasteful number, since it uses less digits than its factorization.

205241020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10262060 (or 10262058 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 205241020 is about 14326.2353743054. The cubic root of 205241020 is about 589.8678436165.

Adding to 205241020 its reverse (20142502), we get a palindrome (225383522).

The spelling of 205241020 in words is "two hundred five million, two hundred forty-one thousand, twenty".