42444122423443 has 16 divisors (see below), whose sum is σ = 46467707345920. Its totient is φ = 38530843170336.

The previous prime is 42444122423419. The next prime is 42444122423447. The reversal of 42444122423443 is 34432422144424.

It is a cyclic number.

It is not a de Polignac number, because 42444122423443 - 2⁵ = 42444122423411 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42444122423443.

It is not an unprimeable number, because it can be changed into a prime (42444122423447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39611613 + ... + 40669006.

It is an arithmetic number, because the mean of its divisors is an integer number (2904231709120).

Almost surely, 2^{42444122423443} is an apocalyptic number.

42444122423443 is a deficient number, since it is larger than the sum of its proper divisors (4023584922477).

42444122423443 is a wasteful number, since it uses less digits than its factorization.

42444122423443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80281306.

The product of its digits is 2359296, while the sum is 43.

Adding to 42444122423443 its reverse (34432422144424), we get a palindrome (76876544567867).

The spelling of 42444122423443 in words is "forty-two trillion, four hundred forty-four billion, one hundred twenty-two million, four hundred twenty-three thousand, four hundred forty-three".