2442243621 has 4 divisors (see below), whose sum is σ = 3256324832. Its totient is φ = 1628162412.

The previous prime is 2442243547. The next prime is 2442243623. The reversal of 2442243621 is 1263422442.

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 not a de Polignac number, because 2442243621 - 2⁷ = 2442243493 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 (2442243623) 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, 407040601 + ... + 407040606.

It is an arithmetic number, because the mean of its divisors is an integer number (814081208).

Almost surely, 2^2442243621 is an apocalyptic number.

It is an amenable number.

2442243621 is a deficient number, since it is larger than the sum of its proper divisors (814081211).

2442243621 is an equidigital number, since it uses as much as digits as its factorization.

2442243621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814081210.

The product of its digits is 18432, while the sum is 30.

The square root of 2442243621 is about 49419.0613124126. The cubic root of 2442243621 is about 1346.6756102225.

The spelling of 2442243621 in words is "two billion, four hundred forty-two million, two hundred forty-three thousand, six hundred twenty-one".