42020221430 has 32 divisors (see below), whose sum is σ = 82601454240. Its totient is φ = 15263595520.

The previous prime is 42020221421. The next prime is 42020221483. The reversal of 42020221430 is 3412202024.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 103409 + ... + 307788.

It is an arithmetic number, because the mean of its divisors is an integer number (2581295445).

Almost surely, 2^42020221430 is an apocalyptic number.

42020221430 is a deficient number, since it is larger than the sum of its proper divisors (40581232810).

42020221430 is a wasteful number, since it uses less digits than its factorization.

42020221430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412144.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 42020221430 its reverse (3412202024), we get a palindrome (45432423454).

The spelling of 42020221430 in words is "forty-two billion, twenty million, two hundred twenty-one thousand, four hundred thirty".