42233402021 has 4 divisors (see below), whose sum is σ = 42327463500. Its totient is φ = 42139340544.

The previous prime is 42233402011. The next prime is 42233402047. The reversal of 42233402021 is 12020433224.

42233402021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 25252705921 + 16980696100 = 158911^2 + 130310^2 .

It is a cyclic number.

It is not a de Polignac number, because 42233402021 - 2¹⁸ = 42233139877 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 (42233402011) 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, 47030066 + ... + 47030963.

It is an arithmetic number, because the mean of its divisors is an integer number (10581865875).

Almost surely, 2^42233402021 is an apocalyptic number.

It is an amenable number.

42233402021 is a deficient number, since it is larger than the sum of its proper divisors (94061479).

42233402021 is an equidigital number, since it uses as much as digits as its factorization.

42233402021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94061478.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 42233402021 its reverse (12020433224), we get a palindrome (54253835245).

The spelling of 42233402021 in words is "forty-two billion, two hundred thirty-three million, four hundred two thousand, twenty-one".