42243433241421 has 4 divisors (see below), whose sum is σ = 56324577655232. Its totient is φ = 28162288827612.

The previous prime is 42243433241381. The next prime is 42243433241423. The reversal of 42243433241421 is 12414233434224.

42243433241421 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 not a de Polignac number, because 42243433241421 - 2²³ = 42243424852813 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 42243433241421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42243433241423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7040572206901 + ... + 7040572206906.

It is an arithmetic number, because the mean of its divisors is an integer number (14081144413808).

Almost surely, 2^{42243433241421} is an apocalyptic number.

It is an amenable number.

42243433241421 is a deficient number, since it is larger than the sum of its proper divisors (14081144413811).

42243433241421 is a wasteful number, since it uses less digits than its factorization.

42243433241421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14081144413810.

The product of its digits is 442368, while the sum is 39.

Adding to 42243433241421 its reverse (12414233434224), we get a palindrome (54657666675645).

The spelling of 42243433241421 in words is "forty-two trillion, two hundred forty-three billion, four hundred thirty-three million, two hundred forty-one thousand, four hundred twenty-one".