42022143421 has 16 divisors (see below), whose sum is σ = 45046310400. Its totient is φ = 39081108528.

The previous prime is 42022143389. The next prime is 42022143433. The reversal of 42022143421 is 12434122024.

It is a cyclic number.

It is not a de Polignac number, because 42022143421 - 2⁵ = 42022143389 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 (42020143421) 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, 789186 + ... + 840748.

It is an arithmetic number, because the mean of its divisors is an integer number (2815394400).

Almost surely, 2^42022143421 is an apocalyptic number.

It is an amenable number.

42022143421 is a deficient number, since it is larger than the sum of its proper divisors (3024166979).

42022143421 is a wasteful number, since it uses less digits than its factorization.

42022143421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52368.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 42022143421 its reverse (12434122024), we get a palindrome (54456265445).

The spelling of 42022143421 in words is "forty-two billion, twenty-two million, one hundred forty-three thousand, four hundred twenty-one".