40023243 has 48 divisors (see below), whose sum is σ = 66044160. Its totient is φ = 23170752.

The previous prime is 40023229. The next prime is 40023311. The reversal of 40023243 is 34232004.

40023243 is a `hidden beast` number, since 400 + 23 + 243 = 666.

40023243 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 40023243 - 2¹⁰ = 40022219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40023223) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 287868 + ... + 288006.

It is an arithmetic number, because the mean of its divisors is an integer number (1375920).

Almost surely, 2^40023243 is an apocalyptic number.

40023243 is a deficient number, since it is larger than the sum of its proper divisors (26020917).

40023243 is a wasteful number, since it uses less digits than its factorization.

40023243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288 (or 285 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 40023243 is about 6326.3925739714. The cubic root of 40023243 is about 342.0614181272.

Adding to 40023243 its reverse (34232004), we get a palindrome (74255247).

The spelling of 40023243 in words is "forty million, twenty-three thousand, two hundred forty-three".