42320431212 has 24 divisors (see below), whose sum is σ = 98892271296. Its totient is φ = 14086153488.

The previous prime is 42320431157. The next prime is 42320431213. The reversal of 42320431212 is 21213402324.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (42320431213) 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 7 ways as a sum of consecutive naturals, for example, 2573578 + ... + 2589969.

It is an arithmetic number, because the mean of its divisors is an integer number (4120511304).

Almost surely, 2^42320431212 is an apocalyptic number.

It is an amenable number.

42320431212 is an abundant number, since it is smaller than the sum of its proper divisors (56571840084).

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

42320431212 is a wasteful number, since it uses less digits than its factorization.

42320431212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5164237 (or 5164235 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 42320431212 its reverse (21213402324), we get a palindrome (63533833536).

The spelling of 42320431212 in words is "forty-two billion, three hundred twenty million, four hundred thirty-one thousand, two hundred twelve".