42709173 has 12 divisors (see below), whose sum is σ = 61663680. Its totient is φ = 26282256.

The previous prime is 42709171. The next prime is 42709201. The reversal of 42709173 is 37190724.

42709173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42709173 - 2¹ = 42709171 is a prime.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42709171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41613 + ... + 42626.

It is an arithmetic number, because the mean of its divisors is an integer number (5138640).

Almost surely, 2^42709173 is an apocalyptic number.

It is an amenable number.

42709173 is a deficient number, since it is larger than the sum of its proper divisors (18954507).

42709173 is a wasteful number, since it uses less digits than its factorization.

42709173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84268 (or 84255 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 42709173 is about 6535.2255508131. The cubic root of 42709173 is about 349.5481870764.

Adding to 42709173 its reverse (37190724), we get a palindrome (79899897).

The spelling of 42709173 in words is "forty-two million, seven hundred nine thousand, one hundred seventy-three".