40212205 has 16 divisors (see below), whose sum is σ = 53141184. Its totient is φ = 28967680.

The previous prime is 40212203. The next prime is 40212209. The reversal of 40212205 is 50221204.

It is not a de Polignac number, because 40212205 - 2¹ = 40212203 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 (40212203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2469 + ... + 9301.

It is an arithmetic number, because the mean of its divisors is an integer number (3321324).

Almost surely, 2^40212205 is an apocalyptic number.

It is an amenable number.

40212205 is a deficient number, since it is larger than the sum of its proper divisors (12928979).

40212205 is a wasteful number, since it uses less digits than its factorization.

40212205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6956.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 40212205 is about 6341.3094073701. The cubic root of 40212205 is about 342.5988987489.

Adding to 40212205 its reverse (50221204), we get a palindrome (90433409).

It can be divided in two parts, 4021 and 2205, that added together give a palindrome (6226).

The spelling of 40212205 in words is "forty million, two hundred twelve thousand, two hundred five".