40401205 has 16 divisors (see below), whose sum is σ = 54013680. Its totient is φ = 28804608.

The previous prime is 40401187. The next prime is 40401217. The reversal of 40401205 is 50210404.

40401205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 9498724 + 30902481 = 3082^2 + 5559^2 .

It is a cyclic number.

It is not a de Polignac number, because 40401205 - 2⁵ = 40401173 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 8832 + ... + 12601.

It is an arithmetic number, because the mean of its divisors is an integer number (3375855).

Almost surely, 2^40401205 is an apocalyptic number.

It is an amenable number.

40401205 is a deficient number, since it is larger than the sum of its proper divisors (13612475).

40401205 is a wasteful number, since it uses less digits than its factorization.

40401205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21480.

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

The square root of 40401205 is about 6356.1942229608. The cubic root of 40401205 is about 343.1348057865.

Adding to 40401205 its reverse (50210404), we get a palindrome (90611609).

The spelling of 40401205 in words is "forty million, four hundred one thousand, two hundred five".