42231440012 has 12 divisors (see below), whose sum is σ = 74177734176. Its totient is φ = 21037801680.

The previous prime is 42231439997. The next prime is 42231440039. The reversal of 42231440012 is 21004413224.

It is a self number, because there is not a number n which added to its sum of digits gives 42231440012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19478363 + ... + 19480530.

It is an arithmetic number, because the mean of its divisors is an integer number (6181477848).

Almost surely, 2^42231440012 is an apocalyptic number.

It is an amenable number.

42231440012 is a deficient number, since it is larger than the sum of its proper divisors (31946294164).

42231440012 is a wasteful number, since it uses less digits than its factorization.

42231440012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38959168 (or 38959166 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 42231440012 its reverse (21004413224), we get a palindrome (63235853236).

The spelling of 42231440012 in words is "forty-two billion, two hundred thirty-one million, four hundred forty thousand, twelve".