2020115243 has 4 divisors (see below), whose sum is σ = 2020455360. Its totient is φ = 2019775128.

The previous prime is 2020115239. The next prime is 2020115249. The reversal of 2020115243 is 3425110202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2020115243 - 2² = 2020115239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2020115249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160988 + ... + 173081.

It is an arithmetic number, because the mean of its divisors is an integer number (505113840).

Almost surely, 2^2020115243 is an apocalyptic number.

2020115243 is a deficient number, since it is larger than the sum of its proper divisors (340117).

2020115243 is an equidigital number, since it uses as much as digits as its factorization.

2020115243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340116.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2020115243 is about 44945.6921517513. The cubic root of 2020115243 is about 1264.1309039222.

Adding to 2020115243 its reverse (3425110202), we get a palindrome (5445225445).

The spelling of 2020115243 in words is "two billion, twenty million, one hundred fifteen thousand, two hundred forty-three".