40173 has 8 divisors (see below), whose sum is σ = 61248. Its totient is φ = 22944.

The previous prime is 40169. The next prime is 40177. The reversal of 40173 is 37104.

It is an interprime number because it is at equal distance from previous prime (40169) and next prime (40177).

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

It is not a de Polignac number, because 40173 - 2² = 40169 is a prime.

It is a super-2 number, since 2×40173² = 3227739858, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40177) 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, 936 + ... + 977.

It is an arithmetic number, because the mean of its divisors is an integer number (7656).

2⁴⁰¹⁷³ is an apocalyptic number.

It is an amenable number.

40173 is a deficient number, since it is larger than the sum of its proper divisors (21075).

40173 is a wasteful number, since it uses less digits than its factorization.

40173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1923.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 40173 is about 200.4320333679. The cubic root of 40173 is about 34.2487523299.

Adding to 40173 its reverse (37104), we get a palindrome (77277).

It can be divided in two parts, 401 and 73, that added together give a palindrome (474).

The spelling of 40173 in words is "forty thousand, one hundred seventy-three", and thus it is an iban number.