40212305 has 16 divisors (see below), whose sum is σ = 55396224. Its totient is φ = 27450240.

The previous prime is 40212281. The next prime is 40212313. The reversal of 40212305 is 50321204.

40212305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40212305 - 2¹⁴ = 40195921 is a prime.

It is a Duffinian 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, 5690 + ... + 10620.

It is an arithmetic number, because the mean of its divisors is an integer number (3462264).

Almost surely, 2^40212305 is an apocalyptic number.

It is an amenable number.

40212305 is a deficient number, since it is larger than the sum of its proper divisors (15183919).

40212305 is a wasteful number, since it uses less digits than its factorization.

40212305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5176.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 40212305 is about 6341.3172921720. The cubic root of 40212305 is about 342.5991827411.

Adding to 40212305 its reverse (50321204), we get a palindrome (90533509).

The spelling of 40212305 in words is "forty million, two hundred twelve thousand, three hundred five".