40207 has 4 divisors (see below), whose sum is σ = 41536. Its totient is φ = 38880.

The previous prime is 40193. The next prime is 40213. The reversal of 40207 is 70204.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40207 is a prime.

It is a Duffinian number.

40207 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 618 + ... + 679.

It is an arithmetic number, because the mean of its divisors is an integer number (10384).

2⁴⁰²⁰⁷ is an apocalyptic number.

40207 is a deficient number, since it is larger than the sum of its proper divisors (1329).

40207 is a wasteful number, since it uses less digits than its factorization.

40207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328.

The product of its (nonzero) digits is 56, while the sum is 13.

The square root of 40207 is about 200.5168322112. The cubic root of 40207 is about 34.2584116303.

The spelling of 40207 in words is "forty thousand, two hundred seven", and thus it is an iban number.