42251539712 has 72 divisors (see below), whose sum is σ = 90232870560. Its totient is φ = 19685652480.

The previous prime is 42251539709. The next prime is 42251539717. The reversal of 42251539712 is 21793515224.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 42251539712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42251539717) 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, 225503 + ... + 367905.

Almost surely, 2^42251539712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42251539712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45116435280).

42251539712 is an abundant number, since it is smaller than the sum of its proper divisors (47981330848).

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

42251539712 is a wasteful number, since it uses less digits than its factorization.

42251539712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142499 (or 142485 counting only the distinct ones).

The product of its digits is 151200, while the sum is 41.

The spelling of 42251539712 in words is "forty-two billion, two hundred fifty-one million, five hundred thirty-nine thousand, seven hundred twelve".