1020510205 has 32 divisors (see below), whose sum is σ = 1448028288. Its totient is φ = 680659200.

The previous prime is 1020510199. The next prime is 1020510233. The reversal of 1020510205 is 5020150201.

It is not a de Polignac number, because 1020510205 - 2¹⁷ = 1020379133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107710 + ... + 116800.

It is an arithmetic number, because the mean of its divisors is an integer number (45250884).

Almost surely, 2^1020510205 is an apocalyptic number.

It is an amenable number.

1020510205 is a deficient number, since it is larger than the sum of its proper divisors (427518083).

1020510205 is a wasteful number, since it uses less digits than its factorization.

1020510205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9277.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 1020510205 is about 31945.4254158557. The cubic root of 1020510205 is about 1006.7905194724.

Adding to 1020510205 its reverse (5020150201), we get a palindrome (6040660406).

It can be divided in two parts, 1020 and 510205, that added together give a square (511225 = 715²).

The spelling of 1020510205 in words is "one billion, twenty million, five hundred ten thousand, two hundred five".