40281205 has 4 divisors (see below), whose sum is σ = 48337452. Its totient is φ = 32224960.

The previous prime is 40281193. The next prime is 40281221. The reversal of 40281205 is 50218204.

40281205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5317636 + 34963569 = 2306^2 + 5913^2 .

It is not a de Polignac number, because 40281205 - 2⁷ = 40281077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4028116 + ... + 4028125.

It is an arithmetic number, because the mean of its divisors is an integer number (12084363).

Almost surely, 2^40281205 is an apocalyptic number.

It is an amenable number.

40281205 is a deficient number, since it is larger than the sum of its proper divisors (8056247).

40281205 is an equidigital number, since it uses as much as digits as its factorization.

40281205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8056246.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 40281205 is about 6346.7475922712. The cubic root of 40281205 is about 342.7947415783.

Adding to 40281205 its reverse (50218204), we get a palindrome (90499409).

The spelling of 40281205 in words is "forty million, two hundred eighty-one thousand, two hundred five".