4243440121005 has 64 divisors (see below), whose sum is σ = 7226837480448. Its totient is φ = 2118812267520.

The previous prime is 4243440120961. The next prime is 4243440121021. The reversal of 4243440121005 is 5001210443424.

It is not a de Polignac number, because 4243440121005 - 2²⁶ = 4243373012141 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 67752034 + ... + 67814636.

It is an arithmetic number, because the mean of its divisors is an integer number (112919335632).

Almost surely, 2^{4243440121005} is an apocalyptic number.

It is an amenable number.

4243440121005 is a deficient number, since it is larger than the sum of its proper divisors (2983397359443).

4243440121005 is a wasteful number, since it uses less digits than its factorization.

4243440121005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64026.

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 4243440121005 its reverse (5001210443424), we get a palindrome (9244650564429).

The spelling of 4243440121005 in words is "four trillion, two hundred forty-three billion, four hundred forty million, one hundred twenty-one thousand, five".