1050020005 has 4 divisors (see below), whose sum is σ = 1260024012. Its totient is φ = 840016000.

The previous prime is 1050019981. The next prime is 1050020021. The reversal of 1050020005 is 5000200501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5000200501 = 991 ⋅5045611.

It can be written as a sum of positive squares in 2 ways, for example, as 537405124 + 512614881 = 23182^2 + 22641^2 .

It is not a de Polignac number, because 1050020005 - 2¹³ = 1050011813 is a prime.

It is a super-2 number, since 2×1050020005² = 2205084021800400050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

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, 105001996 + ... + 105002005.

It is an arithmetic number, because the mean of its divisors is an integer number (315006003).

Almost surely, 2^1050020005 is an apocalyptic number.

It is an amenable number.

1050020005 is a deficient number, since it is larger than the sum of its proper divisors (210004007).

1050020005 is an equidigital number, since it uses as much as digits as its factorization.

1050020005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210004006.

The product of its (nonzero) digits is 50, while the sum is 13.

The square root of 1050020005 is about 32404.0121744206. The cubic root of 1050020005 is about 1016.4028116974.

Adding to 1050020005 its reverse (5000200501), we get a palindrome (6050220506).

The spelling of 1050020005 in words is "one billion, fifty million, twenty thousand, five".