42234440221 has 8 divisors (see below), whose sum is σ = 42421392000. Its totient is φ = 42047574240.

The previous prime is 42234440201. The next prime is 42234440239. The reversal of 42234440221 is 12204443224.

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-42234440221 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 42234440221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42234440201) 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, 1092106 + ... + 1130116.

It is an arithmetic number, because the mean of its divisors is an integer number (5302674000).

Almost surely, 2^42234440221 is an apocalyptic number.

It is an amenable number.

42234440221 is a deficient number, since it is larger than the sum of its proper divisors (186951779).

42234440221 is a wasteful number, since it uses less digits than its factorization.

42234440221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42899.

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 42234440221 its reverse (12204443224), we get a palindrome (54438883445).

It can be divided in two parts, 4223 and 4440221, that added together give a palindrome (4444444).

The spelling of 42234440221 in words is "forty-two billion, two hundred thirty-four million, four hundred forty thousand, two hundred twenty-one".