42344444521 has 8 divisors (see below), whose sum is σ = 42719796224. Its totient is φ = 41969748240.

The previous prime is 42344444437. The next prime is 42344444557. The reversal of 42344444521 is 12544444324.

It is a happy number.

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-42344444521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42344444621) 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, 33615 + ... + 292948.

It is an arithmetic number, because the mean of its divisors is an integer number (5339974528).

Almost surely, 2^42344444521 is an apocalyptic number.

It is an amenable number.

42344444521 is a deficient number, since it is larger than the sum of its proper divisors (375351703).

42344444521 is a wasteful number, since it uses less digits than its factorization.

42344444521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327711.

The product of its digits is 245760, while the sum is 37.

Adding to 42344444521 its reverse (12544444324), we get a palindrome (54888888845).

The spelling of 42344444521 in words is "forty-two billion, three hundred forty-four million, four hundred forty-four thousand, five hundred twenty-one".