42020021233 has 2 divisors, whose sum is σ = 42020021234. Its totient is φ = 42020021232.

The previous prime is 42020021231. The next prime is 42020021249. The reversal of 42020021233 is 33212002024.

42020021233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37083975184 + 4936046049 = 192572^2 + 70257^2 .

It is a cyclic number.

It is not a de Polignac number, because 42020021233 - 2¹ = 42020021231 is a prime.

Together with 42020021231, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 42020021233.

It is not a weakly prime, because it can be changed into another prime (42020021231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21010010616 + 21010010617.

It is an arithmetic number, because the mean of its divisors is an integer number (21010010617).

Almost surely, 2^42020021233 is an apocalyptic number.

It is an amenable number.

42020021233 is a deficient number, since it is larger than the sum of its proper divisors (1).

42020021233 is an equidigital number, since it uses as much as digits as its factorization.

42020021233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 42020021233 its reverse (33212002024), we get a palindrome (75232023257).

The spelling of 42020021233 in words is "forty-two billion, twenty million, twenty-one thousand, two hundred thirty-three".