2120043013 has 4 divisors (see below), whose sum is σ = 2312774208. Its totient is φ = 1927311820.

The previous prime is 2120042921. The next prime is 2120043017. The reversal of 2120043013 is 3103400212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2120043013 - 2⁹ = 2120042501 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 (2120043017) 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, 96365581 + ... + 96365602.

It is an arithmetic number, because the mean of its divisors is an integer number (578193552).

Almost surely, 2^2120043013 is an apocalyptic number.

It is an amenable number.

2120043013 is a deficient number, since it is larger than the sum of its proper divisors (192731195).

2120043013 is a wasteful number, since it uses less digits than its factorization.

2120043013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192731194.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2120043013 is about 46043.9248218481. The cubic root of 2120043013 is about 1284.6403456823.

Adding to 2120043013 its reverse (3103400212), we get a palindrome (5223443225).

The spelling of 2120043013 in words is "two billion, one hundred twenty million, forty-three thousand, thirteen".