2042155213 has 6 divisors (see below), whose sum is σ = 2375568366. Its totient is φ = 1750418712.

The previous prime is 2042155189. The next prime is 2042155223. The reversal of 2042155213 is 3125512402.

It can be written as a sum of positive squares in only one way, i.e., 2023380324 + 18774889 = 44982^2 + 4333^2 .

It is not a de Polignac number, because 2042155213 - 2⁹ = 2042154701 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 (2042155223) 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 5 ways as a sum of consecutive naturals, for example, 20838270 + ... + 20838367.

It is an arithmetic number, because the mean of its divisors is an integer number (395928061).

Almost surely, 2^2042155213 is an apocalyptic number.

It is an amenable number.

2042155213 is a deficient number, since it is larger than the sum of its proper divisors (333413153).

2042155213 is an equidigital number, since it uses as much as digits as its factorization.

2042155213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41676651 (or 41676644 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 2042155213 is about 45190.2114732826. The cubic root of 2042155213 is about 1268.7116148514.

Adding to 2042155213 its reverse (3125512402), we get a palindrome (5167667615).

The spelling of 2042155213 in words is "two billion, forty-two million, one hundred fifty-five thousand, two hundred thirteen".