42442042422021 has 32 divisors (see below), whose sum is σ = 62371846699008. Its totient is φ = 25456643504640.

The previous prime is 42442042421983. The next prime is 42442042422023. The reversal of 42442042422021 is 12022424024424.

It is not a de Polignac number, because 42442042422021 - 2⁷ = 42442042421893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42442042422023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 152109780 + ... + 152388546.

It is an arithmetic number, because the mean of its divisors is an integer number (1949120209344).

Almost surely, 2^{42442042422021} is an apocalyptic number.

It is an amenable number.

42442042422021 is a deficient number, since it is larger than the sum of its proper divisors (19929804276987).

42442042422021 is a wasteful number, since it uses less digits than its factorization.

42442042422021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326441.

The product of its (nonzero) digits is 65536, while the sum is 33.

Adding to 42442042422021 its reverse (12022424024424), we get a palindrome (54464466446445).

The spelling of 42442042422021 in words is "forty-two trillion, four hundred forty-two billion, forty-two million, four hundred twenty-two thousand, twenty-one".