42444021033 has 16 divisors (see below), whose sum is σ = 63945796800. Its totient is φ = 27816419520.

The previous prime is 42444021029. The next prime is 42444021041. The reversal of 42444021033 is 33012044424.

It is a happy number.

42444021033 is a `hidden beast` number, since 4 + 2 + 4 + 440 + 210 + 3 + 3 = 666.

It is not a de Polignac number, because 42444021033 - 2² = 42444021029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 42444020988 and 42444021006.

It is not an unprimeable number, because it can be changed into a prime (42444021833) 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 in 15 ways as a sum of consecutive naturals, for example, 13320448 + ... + 13323633.

It is an arithmetic number, because the mean of its divisors is an integer number (3996612300).

Almost surely, 2^42444021033 is an apocalyptic number.

It is an amenable number.

42444021033 is a deficient number, since it is larger than the sum of its proper divisors (21501775767).

42444021033 is a wasteful number, since it uses less digits than its factorization.

42444021033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26644149 (or 26644143 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 42444021033 its reverse (33012044424), we get a palindrome (75456065457).

The spelling of 42444021033 in words is "forty-two billion, four hundred forty-four million, twenty-one thousand, thirty-three".