42000212321 has 4 divisors (see below), whose sum is σ = 42001138944. Its totient is φ = 41999285700.

The previous prime is 42000212311. The next prime is 42000212323. The reversal of 42000212321 is 12321200024.

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 42000212321 - 2³⁴ = 24820343137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42000212321.

It is not an unprimeable number, because it can be changed into a prime (42000212323) 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, 391625 + ... + 487206.

It is an arithmetic number, because the mean of its divisors is an integer number (10500284736).

Almost surely, 2^42000212321 is an apocalyptic number.

It is an amenable number.

42000212321 is a deficient number, since it is larger than the sum of its proper divisors (926623).

42000212321 is an equidigital number, since it uses as much as digits as its factorization.

42000212321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926622.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 42000212321 its reverse (12321200024), we get a palindrome (54321412345).

The spelling of 42000212321 in words is "forty-two billion, two hundred twelve thousand, three hundred twenty-one".