1020051205 has 8 divisors (see below), whose sum is σ = 1224419832. Its totient is φ = 815802048.

The previous prime is 1020051167. The next prime is 1020051209. The reversal of 1020051205 is 5021500201.

It can be written as a sum of positive squares in 4 ways, for example, as 19088161 + 1000963044 = 4369^2 + 31638^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1020051205 - 2⁹ = 1020050693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020051209) 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 7 ways as a sum of consecutive naturals, for example, 9862 + ... + 46231.

It is an arithmetic number, because the mean of its divisors is an integer number (153052479).

Almost surely, 2^1020051205 is an apocalyptic number.

It is an amenable number.

1020051205 is a deficient number, since it is larger than the sum of its proper divisors (204368627).

1020051205 is an equidigital number, since it uses as much as digits as its factorization.

1020051205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59735.

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

The square root of 1020051205 is about 31938.2404806527. The cubic root of 1020051205 is about 1006.6395537606.

Adding to 1020051205 its reverse (5021500201), we get a palindrome (6041551406).

The spelling of 1020051205 in words is "one billion, twenty million, fifty-one thousand, two hundred five".