40571243 has 4 divisors (see below), whose sum is σ = 40748640. Its totient is φ = 40393848.

The previous prime is 40571233. The next prime is 40571249. The reversal of 40571243 is 34217504.

40571243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40571243 - 2⁸ = 40570987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40571249) 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 3 ways as a sum of consecutive naturals, for example, 88355 + ... + 88812.

It is an arithmetic number, because the mean of its divisors is an integer number (10187160).

Almost surely, 2^40571243 is an apocalyptic number.

40571243 is a deficient number, since it is larger than the sum of its proper divisors (177397).

40571243 is a wasteful number, since it uses less digits than its factorization.

40571243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177396.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 40571243 is about 6369.5559499858. Note that the first 3 decimals coincide. The cubic root of 40571243 is about 343.6155199362.

Adding to 40571243 its reverse (34217504), we get a palindrome (74788747).

The spelling of 40571243 in words is "forty million, five hundred seventy-one thousand, two hundred forty-three".