4431221242 has 16 divisors (see below), whose sum is σ = 7625943360. Its totient is φ = 1891703808.

The previous prime is 4431221237. The next prime is 4431221243. The reversal of 4431221242 is 2421221344.

It is not an unprimeable number, because it can be changed into a prime (4431221243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 612192 + ... + 619387.

It is an arithmetic number, because the mean of its divisors is an integer number (476621460).

Almost surely, 2^4431221242 is an apocalyptic number.

4431221242 is a deficient number, since it is larger than the sum of its proper divisors (3194722118).

4431221242 is a wasteful number, since it uses less digits than its factorization.

4431221242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231845.

The product of its digits is 3072, while the sum is 25.

The square root of 4431221242 is about 66567.4187722492. The cubic root of 4431221242 is about 1642.5092020393.

Adding to 4431221242 its reverse (2421221344), we get a palindrome (6852442586).

The spelling of 4431221242 in words is "four billion, four hundred thirty-one million, two hundred twenty-one thousand, two hundred forty-two".