42239480321 has 4 divisors (see below), whose sum is σ = 44724155652. Its totient is φ = 39754804992.

The previous prime is 42239480299. The next prime is 42239480347. The reversal of 42239480321 is 12308493224.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20323638721 + 21915841600 = 142561^2 + 148040^2 .

It is a cyclic number.

It is not a de Polignac number, because 42239480321 - 2²⁶ = 42172371457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42239380321) 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, 1242337640 + ... + 1242337673.

It is an arithmetic number, because the mean of its divisors is an integer number (11181038913).

Almost surely, 2^42239480321 is an apocalyptic number.

It is an amenable number.

42239480321 is a deficient number, since it is larger than the sum of its proper divisors (2484675331).

42239480321 is a wasteful number, since it uses less digits than its factorization.

42239480321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2484675330.

The product of its (nonzero) digits is 82944, while the sum is 38.

The spelling of 42239480321 in words is "forty-two billion, two hundred thirty-nine million, four hundred eighty thousand, three hundred twenty-one".