42234000221 has 4 divisors (see below), whose sum is σ = 48267428832. Its totient is φ = 36200571612.

The previous prime is 42234000181. The next prime is 42234000227. The reversal of 42234000221 is 12200043224.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42234000221 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42234000193 and 42234000202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42234000227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3016714295 + ... + 3016714308.

It is an arithmetic number, because the mean of its divisors is an integer number (12066857208).

Almost surely, 2^42234000221 is an apocalyptic number.

It is an amenable number.

42234000221 is a deficient number, since it is larger than the sum of its proper divisors (6033428611).

42234000221 is an equidigital number, since it uses as much as digits as its factorization.

42234000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6033428610.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 42234000221 its reverse (12200043224), we get a palindrome (54434043445).

The spelling of 42234000221 in words is "forty-two billion, two hundred thirty-four million, two hundred twenty-one", and thus it is an aban number.