4012005305 has 32 divisors (see below), whose sum is σ = 6130114560. Its totient is φ = 2447766720.

The previous prime is 4012005301. The next prime is 4012005317. The reversal of 4012005305 is 5035002104.

It is not a de Polignac number, because 4012005305 - 2² = 4012005301 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4012005301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92765 + ... + 128954.

It is an arithmetic number, because the mean of its divisors is an integer number (191566080).

Almost surely, 2^4012005305 is an apocalyptic number.

It is an amenable number.

4012005305 is a deficient number, since it is larger than the sum of its proper divisors (2118109255).

4012005305 is a wasteful number, since it uses less digits than its factorization.

4012005305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221789.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 4012005305 is about 63340.3923653777. The cubic root of 4012005305 is about 1588.9875686227.

Adding to 4012005305 its reverse (5035002104), we get a palindrome (9047007409).

The spelling of 4012005305 in words is "four billion, twelve million, five thousand, three hundred five".