42134330221 has 8 divisors (see below), whose sum is σ = 44667042624. Its totient is φ = 39607642560.

The previous prime is 42134330191. The next prime is 42134330237. The reversal of 42134330221 is 12203343124.

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

It is a cyclic number.

It is not a de Polignac number, because 42134330221 - 2¹⁹ = 42133805933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42134330261) 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 7 ways as a sum of consecutive naturals, for example, 1491775 + ... + 1519756.

It is an arithmetic number, because the mean of its divisors is an integer number (5583380328).

Almost surely, 2^42134330221 is an apocalyptic number.

It is an amenable number.

42134330221 is a deficient number, since it is larger than the sum of its proper divisors (2532712403).

42134330221 is a wasteful number, since it uses less digits than its factorization.

42134330221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3012371.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 42134330221 its reverse (12203343124), we get a palindrome (54337673345).

The spelling of 42134330221 in words is "forty-two billion, one hundred thirty-four million, three hundred thirty thousand, two hundred twenty-one".