42234244234221 has 8 divisors (see below), whose sum is σ = 60644043003040. Its totient is φ = 25990304144112.

The previous prime is 42234244234199. The next prime is 42234244234223. The reversal of 42234244234221 is 12243244243224.

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

It is not a de Polignac number, because 42234244234221 - 2²¹ = 42234242137069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1082929339339 = 42234244234221 / (4 + 2 + 2 + 3 + 4 + 2 + 4 + 4 + 2 + 3 + 4 + 2 + 2 + 1).

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 42234244234221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42234244234223) 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, 541464669631 + ... + 541464669708.

It is an arithmetic number, because the mean of its divisors is an integer number (7580505375380).

Almost surely, 2^{42234244234221} is an apocalyptic number.

It is an amenable number.

42234244234221 is a deficient number, since it is larger than the sum of its proper divisors (18409798768819).

42234244234221 is a wasteful number, since it uses less digits than its factorization.

42234244234221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082929339355.

The product of its digits is 589824, while the sum is 39.

Adding to 42234244234221 its reverse (12243244243224), we get a palindrome (54477488477445).

The spelling of 42234244234221 in words is "forty-two trillion, two hundred thirty-four billion, two hundred forty-four million, two hundred thirty-four thousand, two hundred twenty-one".