40023012 has 12 divisors (see below), whose sum is σ = 93387056. Its totient is φ = 13341000.

The previous prime is 40023007. The next prime is 40023041. The reversal of 40023012 is 21032004.

40023012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 3335251 = 40023012 / (4 + 0 + 0 + 2 + 3 + 0 + 1 + 2).

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 3 ways as a sum of consecutive naturals, for example, 1667614 + ... + 1667637.

Almost surely, 2^40023012 is an apocalyptic number.

It is an amenable number.

40023012 is an abundant number, since it is smaller than the sum of its proper divisors (53364044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40023012 is a wasteful number, since it uses less digits than its factorization.

40023012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3335258 (or 3335256 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 40023012 is about 6326.3743170951. The cubic root of 40023012 is about 342.0607600401.

Adding to 40023012 its reverse (21032004), we get a palindrome (61055016).

The spelling of 40023012 in words is "forty million, twenty-three thousand, twelve".