40061205 has 24 divisors (see below), whose sum is σ = 69588792. Its totient is φ = 21320064.

The previous prime is 40061191. The next prime is 40061221. The reversal of 40061205 is 50216004.

It is a happy number.

40061205 is a `hidden beast` number, since 400 + 61 + 205 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 30276 + 40030929 = 174^2 + 6327^2 .

It is not a de Polignac number, because 40061205 - 2⁵ = 40061173 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 (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35307 + ... + 36423.

It is an arithmetic number, because the mean of its divisors is an integer number (2899533).

Almost surely, 2^40061205 is an apocalyptic number.

40061205 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40061205 is a deficient number, since it is larger than the sum of its proper divisors (29527587).

40061205 is a wasteful number, since it uses less digits than its factorization.

40061205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1925 (or 1922 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 40061205 is about 6329.3921509099. The cubic root of 40061205 is about 342.1695322398.

Adding to 40061205 its reverse (50216004), we get a palindrome (90277209).

The spelling of 40061205 in words is "forty million, sixty-one thousand, two hundred five".