42231324404021 has 4 divisors (see below), whose sum is σ = 42238993072032. Its totient is φ = 42223655736012.

The previous prime is 42231324404011. The next prime is 42231324404041. The reversal of 42231324404021 is 12040442313224.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42231324404021 - 2¹⁰ = 42231324402997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42231324404011) 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, 3834325745 + ... + 3834336758.

It is an arithmetic number, because the mean of its divisors is an integer number (10559748268008).

Almost surely, 2^{42231324404021} is an apocalyptic number.

It is an amenable number.

42231324404021 is a deficient number, since it is larger than the sum of its proper divisors (7668668011).

42231324404021 is an equidigital number, since it uses as much as digits as its factorization.

42231324404021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7668668010.

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 42231324404021 its reverse (12040442313224), we get a palindrome (54271766717245).

The spelling of 42231324404021 in words is "forty-two trillion, two hundred thirty-one billion, three hundred twenty-four million, four hundred four thousand, twenty-one".