42315251042172 has 24 divisors (see below), whose sum is σ = 98757561316176. Its totient is φ = 14101944316288.

The previous prime is 42315251042161. The next prime is 42315251042221. The reversal of 42315251042172 is 27124015251324.

42315251042172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 42315251042172.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 392364393 + ... + 392472224.

It is an arithmetic number, because the mean of its divisors is an integer number (4114898388174).

Almost surely, 2^{42315251042172} is an apocalyptic number.

It is an amenable number.

42315251042172 is an abundant number, since it is smaller than the sum of its proper divisors (56442310274004).

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

42315251042172 is a wasteful number, since it uses less digits than its factorization.

42315251042172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784841117 (or 784841115 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 39.

Adding to 42315251042172 its reverse (27124015251324), we get a palindrome (69439266293496).

The spelling of 42315251042172 in words is "forty-two trillion, three hundred fifteen billion, two hundred fifty-one million, forty-two thousand, one hundred seventy-two".