42044324021 has 12 divisors (see below), whose sum is σ = 51482846880. Its totient is φ = 34141254840.

The previous prime is 42044324009. The next prime is 42044324039. The reversal of 42044324021 is 12042344024.

It is a happy number.

It is not a de Polignac number, because 42044324021 - 2⁶ = 42044323957 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42044324321) 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 11 ways as a sum of consecutive naturals, for example, 22579265 + ... + 22581126.

It is an arithmetic number, because the mean of its divisors is an integer number (4290237240).

Almost surely, 2^42044324021 is an apocalyptic number.

It is an amenable number.

42044324021 is a deficient number, since it is larger than the sum of its proper divisors (9438522859).

42044324021 is a wasteful number, since it uses less digits than its factorization.

42044324021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45160424 (or 45160417 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 42044324021 its reverse (12042344024), we get a palindrome (54086668045).

The spelling of 42044324021 in words is "forty-two billion, forty-four million, three hundred twenty-four thousand, twenty-one".