42173720064160 has 48 divisors (see below), whose sum is σ = 100141177247496. Its totient is φ = 16783856094208.

The previous prime is 42173720064143. The next prime is 42173720064163. The reversal of 42173720064160 is 6146002737124.

It can be written as a sum of positive squares in 4 ways, for example, as 38916287077264 + 3257432986896 = 6238292^2 + 1804836^2 .

It is not an unprimeable number, because it can be changed into a prime (42173720064163) 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, 668967847 + ... + 669030886.

Almost surely, 2^{42173720064160} is an apocalyptic number.

42173720064160 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42173720064160 is an abundant number, since it is smaller than the sum of its proper divisors (57967457183336).

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

42173720064160 is a wasteful number, since it uses less digits than its factorization.

42173720064160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337998945 (or 1337998937 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 43.

The spelling of 42173720064160 in words is "forty-two trillion, one hundred seventy-three billion, seven hundred twenty million, sixty-four thousand, one hundred sixty".