42231100321 has 4 divisors (see below), whose sum is σ = 42235294612. Its totient is φ = 42226906032.

The previous prime is 42231100319. The next prime is 42231100333. The reversal of 42231100321 is 12300113224.

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 23389420096 + 18841680225 = 152936^2 + 137265^2 .

It is a cyclic number.

It is not a de Polignac number, because 42231100321 - 2¹ = 42231100319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42231100361) 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, 2082006 + ... + 2102191.

It is an arithmetic number, because the mean of its divisors is an integer number (10558823653).

Almost surely, 2^42231100321 is an apocalyptic number.

It is an amenable number.

42231100321 is a deficient number, since it is larger than the sum of its proper divisors (4194291).

42231100321 is a wasteful number, since it uses less digits than its factorization.

42231100321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4194290.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 42231100321 its reverse (12300113224), we get a palindrome (54531213545).

The spelling of 42231100321 in words is "forty-two billion, two hundred thirty-one million, one hundred thousand, three hundred twenty-one".