42020242404221 has 8 divisors (see below), whose sum is σ = 42036394060800. Its totient is φ = 42004091265840.

The previous prime is 42020242404191. The next prime is 42020242404227. The reversal of 42020242404221 is 12240424202024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42020242404221 - 2³⁰ = 42019168662397 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 (42020242404227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263421275 + ... + 263580743.

It is an arithmetic number, because the mean of its divisors is an integer number (5254549257600).

Almost surely, 2^{42020242404221} is an apocalyptic number.

It is an amenable number.

42020242404221 is a deficient number, since it is larger than the sum of its proper divisors (16151656579).

42020242404221 is a wasteful number, since it uses less digits than its factorization.

42020242404221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259099.

The product of its (nonzero) digits is 16384, while the sum is 29.

Adding to 42020242404221 its reverse (12240424202024), we get a palindrome (54260666606245).

The spelling of 42020242404221 in words is "forty-two trillion, twenty billion, two hundred forty-two million, four hundred four thousand, two hundred twenty-one".