42578173 has 8 divisors (see below), whose sum is σ = 46548000. Its totient is φ = 38624880.

The previous prime is 42578167. The next prime is 42578197. The reversal of 42578173 is 37187524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42578173 - 2¹⁷ = 42447101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42578113) 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, 1611 + ... + 9367.

It is an arithmetic number, because the mean of its divisors is an integer number (5818500).

Almost surely, 2^42578173 is an apocalyptic number.

It is an amenable number.

42578173 is a deficient number, since it is larger than the sum of its proper divisors (3969827).

42578173 is a wasteful number, since it uses less digits than its factorization.

42578173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8267.

The product of its digits is 47040, while the sum is 37.

The square root of 42578173 is about 6525.1952461210. The cubic root of 42578173 is about 349.1904363746.

The spelling of 42578173 in words is "forty-two million, five hundred seventy-eight thousand, one hundred seventy-three".