42042221033 has 2 divisors, whose sum is σ = 42042221034. Its totient is φ = 42042221032.

The previous prime is 42042221029. The next prime is 42042221047. The reversal of 42042221033 is 33012224024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28846644649 + 13195576384 = 169843^2 + 114872^2 .

It is a cyclic number.

It is not a de Polignac number, because 42042221033 - 2² = 42042221029 is a prime.

It is not a weakly prime, because it can be changed into another prime (42042224033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21021110516 + 21021110517.

It is an arithmetic number, because the mean of its divisors is an integer number (21021110517).

Almost surely, 2^42042221033 is an apocalyptic number.

It is an amenable number.

42042221033 is a deficient number, since it is larger than the sum of its proper divisors (1).

42042221033 is an equidigital number, since it uses as much as digits as its factorization.

42042221033 is an odious number, because the sum of its binary digits is odd.

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

Adding to 42042221033 its reverse (33012224024), we get a palindrome (75054445057).

The spelling of 42042221033 in words is "forty-two billion, forty-two million, two hundred twenty-one thousand, thirty-three".