42421031321 has 8 divisors (see below), whose sum is σ = 44658547200. Its totient is φ = 40183998480.

The previous prime is 42421031293. The next prime is 42421031353. The reversal of 42421031321 is 12313012424.

42421031321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42421031321 - 2¹⁸ = 42420769177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42421031371) 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, 67016 + ... + 298886.

It is an arithmetic number, because the mean of its divisors is an integer number (5582318400).

Almost surely, 2^42421031321 is an apocalyptic number.

It is an amenable number.

42421031321 is a deficient number, since it is larger than the sum of its proper divisors (2237515879).

42421031321 is a wasteful number, since it uses less digits than its factorization.

42421031321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241519.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 42421031321 its reverse (12313012424), we get a palindrome (54734043745).

It can be divided in two parts, 4242103 and 1321, that added together give a palindrome (4243424).

The spelling of 42421031321 in words is "forty-two billion, four hundred twenty-one million, thirty-one thousand, three hundred twenty-one".