40195 has 4 divisors (see below), whose sum is σ = 48240. Its totient is φ = 32152.

The previous prime is 40193. The next prime is 40213. The reversal of 40195 is 59104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40195 - 2¹ = 40193 is a prime.

40195 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4015 + ... + 4024.

It is an arithmetic number, because the mean of its divisors is an integer number (12060).

2⁴⁰¹⁹⁵ is an apocalyptic number.

40195 is a deficient number, since it is larger than the sum of its proper divisors (8045).

40195 is an equidigital number, since it uses as much as digits as its factorization.

40195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8044.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 40195 is about 200.4869073032. The cubic root of 40195 is about 34.2550030875.

Adding to 40195 its reverse (59104), we get a palindrome (99299).

It can be divided in two parts, 401 and 95, that added together give a triangular number (496 = T₃₁).

The spelling of 40195 in words is "forty thousand, one hundred ninety-five".