4242633221 has 4 divisors (see below), whose sum is σ = 4242838944. Its totient is φ = 4242427500.

The previous prime is 4242633181. The next prime is 4242633281. The reversal of 4242633221 is 1223362424.

It is a happy number.

4242633221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 4242633221 - 2¹⁰ = 4242632197 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 (4242633281) 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, 67985 + ... + 114486.

It is an arithmetic number, because the mean of its divisors is an integer number (1060709736).

Almost surely, 2^4242633221 is an apocalyptic number.

It is an amenable number.

4242633221 is a deficient number, since it is larger than the sum of its proper divisors (205723).

4242633221 is a wasteful number, since it uses less digits than its factorization.

4242633221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205722.

The product of its digits is 13824, while the sum is 29.

The square root of 4242633221 is about 65135.4989310744. The cubic root of 4242633221 is about 1618.8694572408.

Adding to 4242633221 its reverse (1223362424), we get a palindrome (5465995645).

The spelling of 4242633221 in words is "four billion, two hundred forty-two million, six hundred thirty-three thousand, two hundred twenty-one".