40210 has 8 divisors (see below), whose sum is σ = 72396. Its totient is φ = 16080.

The previous prime is 40193. The next prime is 40213. The reversal of 40210 is 1204.

It can be written as a sum of positive squares in 2 ways, for example, as 35721 + 4489 = 189^2 + 67^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 40193 and 40202.

It is not an unprimeable number, because it can be changed into a prime (40213) 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, 2001 + ... + 2020.

2⁴⁰²¹⁰ is an apocalyptic number.

40210 is a deficient number, since it is larger than the sum of its proper divisors (32186).

40210 is a wasteful number, since it uses less digits than its factorization.

40210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4028.

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 40210 is about 200.5243127404. The cubic root of 40210 is about 34.2592636601.

Adding to 40210 its reverse (1204), we get a palindrome (41414).

The spelling of 40210 in words is "forty thousand, two hundred ten", and thus it is an iban number.