42288180173 has 2 divisors, whose sum is σ = 42288180174. Its totient is φ = 42288180172.

The previous prime is 42288180157. The next prime is 42288180197. The reversal of 42288180173 is 37108188224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22105147684 + 20183032489 = 148678^2 + 142067^2 .

It is a cyclic number.

It is not a de Polignac number, because 42288180173 - 2⁴ = 42288180157 is a prime.

It is a super-2 number, since 2×42288180173² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42288180113) 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 as a sum of consecutive naturals, namely, 21144090086 + 21144090087.

It is an arithmetic number, because the mean of its divisors is an integer number (21144090087).

Almost surely, 2^42288180173 is an apocalyptic number.

It is an amenable number.

42288180173 is a deficient number, since it is larger than the sum of its proper divisors (1).

42288180173 is an equidigital number, since it uses as much as digits as its factorization.

42288180173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172032, while the sum is 44.

The spelling of 42288180173 in words is "forty-two billion, two hundred eighty-eight million, one hundred eighty thousand, one hundred seventy-three".