42031220412 has 24 divisors (see below), whose sum is σ = 101454670800. Its totient is φ = 13527289216.

The previous prime is 42031220377. The next prime is 42031220417. The reversal of 42031220412 is 21402213024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42031220417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60389337 + ... + 60390032.

It is an arithmetic number, because the mean of its divisors is an integer number (4227277950).

Almost surely, 2^42031220412 is an apocalyptic number.

It is an amenable number.

42031220412 is an abundant number, since it is smaller than the sum of its proper divisors (59423450388).

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

42031220412 is a wasteful number, since it uses less digits than its factorization.

42031220412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120779405 (or 120779403 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 42031220412 its reverse (21402213024), we get a palindrome (63433433436).

The spelling of 42031220412 in words is "forty-two billion, thirty-one million, two hundred twenty thousand, four hundred twelve".