42110440321 has 4 divisors (see below), whose sum is σ = 43562524500. Its totient is φ = 40658356144.

The previous prime is 42110440249. The next prime is 42110440327. The reversal of 42110440321 is 12304401124.

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 9389610000 + 32720830321 = 96900^2 + 180889^2 .

It is a cyclic number.

It is not a de Polignac number, because 42110440321 - 2¹¹ = 42110438273 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42110440292 and 42110440301.

It is not an unprimeable number, because it can be changed into a prime (42110440327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 726042046 + ... + 726042103.

It is an arithmetic number, because the mean of its divisors is an integer number (10890631125).

Almost surely, 2^42110440321 is an apocalyptic number.

It is an amenable number.

42110440321 is a deficient number, since it is larger than the sum of its proper divisors (1452084179).

42110440321 is a wasteful number, since it uses less digits than its factorization.

42110440321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1452084178.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 42110440321 its reverse (12304401124), we get a palindrome (54414841445).

The spelling of 42110440321 in words is "forty-two billion, one hundred ten million, four hundred forty thousand, three hundred twenty-one".