40113243 has 12 divisors (see below), whose sum is σ = 58197360. Its totient is φ = 26624016.

The previous prime is 40113221. The next prime is 40113253. The reversal of 40113243 is 34231104.

It is not a de Polignac number, because 40113243 - 2⁶ = 40113179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40113253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7671 + ... + 11792.

It is an arithmetic number, because the mean of its divisors is an integer number (4849780).

Almost surely, 2^40113243 is an apocalyptic number.

40113243 is a deficient number, since it is larger than the sum of its proper divisors (18084117).

40113243 is a wasteful number, since it uses less digits than its factorization.

40113243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19698 (or 19695 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 40113243 is about 6333.5016381146. The cubic root of 40113243 is about 342.3176232585.

Adding to 40113243 its reverse (34231104), we get a palindrome (74344347).

The spelling of 40113243 in words is "forty million, one hundred thirteen thousand, two hundred forty-three".