42002431422 has 24 divisors (see below), whose sum is σ = 97719943176. Its totient is φ = 12000694608.

The previous prime is 42002431417. The next prime is 42002431423. The reversal of 42002431422 is 22413420024.

It is a junction number, because it is equal to n+sod(n) for n = 42002431392 and 42002431401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42002431423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71432413 + ... + 71433000.

It is an arithmetic number, because the mean of its divisors is an integer number (4071664299).

Almost surely, 2^42002431422 is an apocalyptic number.

42002431422 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

42002431422 is an abundant number, since it is smaller than the sum of its proper divisors (55717511754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42002431422 is a wasteful number, since it uses less digits than its factorization.

42002431422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142865432 (or 142865425 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 42002431422 its reverse (22413420024), we get a palindrome (64415851446).

The spelling of 42002431422 in words is "forty-two billion, two million, four hundred thirty-one thousand, four hundred twenty-two".