42323303021 has 4 divisors (see below), whose sum is σ = 43040647200. Its totient is φ = 41605958844.

The previous prime is 42323303017. The next prime is 42323303039. The reversal of 42323303021 is 12030332324.

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 42323303021 - 2² = 42323303017 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 (42323303081) 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, 358672001 + ... + 358672118.

It is an arithmetic number, because the mean of its divisors is an integer number (10760161800).

Almost surely, 2^42323303021 is an apocalyptic number.

It is an amenable number.

42323303021 is a deficient number, since it is larger than the sum of its proper divisors (717344179).

42323303021 is an equidigital number, since it uses as much as digits as its factorization.

42323303021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717344178.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 42323303021 its reverse (12030332324), we get a palindrome (54353635345).

The spelling of 42323303021 in words is "forty-two billion, three hundred twenty-three million, three hundred three thousand, twenty-one".