42424021333 has 4 divisors (see below), whose sum is σ = 42900695820. Its totient is φ = 41947346848.

The previous prime is 42424021267. The next prime is 42424021337. The reversal of 42424021333 is 33312042424.

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 2676820644 + 39747200689 = 51738^2 + 199367^2 .

It is a cyclic number.

It is not a de Polignac number, because 42424021333 - 2²⁵ = 42390466901 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 (42424021337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238337110 + ... + 238337287.

It is an arithmetic number, because the mean of its divisors is an integer number (10725173955).

Almost surely, 2^42424021333 is an apocalyptic number.

It is an amenable number.

42424021333 is a deficient number, since it is larger than the sum of its proper divisors (476674487).

42424021333 is an equidigital number, since it uses as much as digits as its factorization.

42424021333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476674486.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 42424021333 its reverse (33312042424), we get a palindrome (75736063757).

The spelling of 42424021333 in words is "forty-two billion, four hundred twenty-four million, twenty-one thousand, three hundred thirty-three".