42043131212 has 12 divisors (see below), whose sum is σ = 73986517080. Its totient is φ = 20904126336.

The previous prime is 42043131211. The next prime is 42043131227. The reversal of 42043131212 is 21213134024.

It is not an unprimeable number, because it can be changed into a prime (42043131211) 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 3 ways as a sum of consecutive naturals, for example, 29359013 + ... + 29360444.

It is an arithmetic number, because the mean of its divisors is an integer number (6165543090).

Almost surely, 2^42043131212 is an apocalyptic number.

It is an amenable number.

42043131212 is a deficient number, since it is larger than the sum of its proper divisors (31943385868).

42043131212 is a wasteful number, since it uses less digits than its factorization.

42043131212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58719640 (or 58719638 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 42043131212 its reverse (21213134024), we get a palindrome (63256265236).

The spelling of 42043131212 in words is "forty-two billion, forty-three million, one hundred thirty-one thousand, two hundred twelve".