4042221013 has 4 divisors (see below), whose sum is σ = 4118489388. Its totient is φ = 3965952640.

The previous prime is 4042221011. The next prime is 4042221023. The reversal of 4042221013 is 3101222404.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1534915684 + 2507305329 = 39178^2 + 50073^2 .

It is a cyclic number.

It is not a de Polignac number, because 4042221013 - 2¹ = 4042221011 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 (4042221011) 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, 38134108 + ... + 38134213.

It is an arithmetic number, because the mean of its divisors is an integer number (1029622347).

Almost surely, 2^4042221013 is an apocalyptic number.

It is an amenable number.

4042221013 is a deficient number, since it is larger than the sum of its proper divisors (76268375).

4042221013 is an equidigital number, since it uses as much as digits as its factorization.

4042221013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76268374.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 4042221013 is about 63578.4634369218. The cubic root of 4042221013 is about 1592.9666555785.

Adding to 4042221013 its reverse (3101222404), we get a palindrome (7143443417).

The spelling of 4042221013 in words is "four billion, forty-two million, two hundred twenty-one thousand, thirteen".