40012305 has 32 divisors (see below), whose sum is σ = 68252544. Its totient is φ = 19946496.

The previous prime is 40012277. The next prime is 40012319. The reversal of 40012305 is 50321004.

It is not a de Polignac number, because 40012305 - 2¹⁰ = 40011281 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43662 + ... + 44568.

It is an arithmetic number, because the mean of its divisors is an integer number (2132892).

Almost surely, 2^40012305 is an apocalyptic number.

It is an amenable number.

40012305 is a deficient number, since it is larger than the sum of its proper divisors (28240239).

40012305 is a wasteful number, since it uses less digits than its factorization.

40012305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 40012305 is about 6325.5280411994. The cubic root of 40012305 is about 342.0302544967.

Adding to 40012305 its reverse (50321004), we get a palindrome (90333309).

The spelling of 40012305 in words is "forty million, twelve thousand, three hundred five".