4431442121 has 8 divisors (see below), whose sum is σ = 4586761920. Its totient is φ = 4276289808.

The previous prime is 4431442097. The next prime is 4431442123. The reversal of 4431442121 is 1212441344.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4431442121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4431442123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13220 + ... + 95066.

It is an arithmetic number, because the mean of its divisors is an integer number (573345240).

Almost surely, 2^4431442121 is an apocalyptic number.

It is an amenable number.

4431442121 is a deficient number, since it is larger than the sum of its proper divisors (155319799).

4431442121 is a wasteful number, since it uses less digits than its factorization.

4431442121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83743.

The product of its digits is 3072, while the sum is 26.

The square root of 4431442121 is about 66569.0778139520. The cubic root of 4431442121 is about 1642.5364924665.

Adding to 4431442121 its reverse (1212441344), we get a palindrome (5643883465).

The spelling of 4431442121 in words is "four billion, four hundred thirty-one million, four hundred forty-two thousand, one hundred twenty-one".