40641243 has 8 divisors (see below), whose sum is σ = 54343248. Its totient is φ = 27016704.

The previous prime is 40641221. The next prime is 40641257. The reversal of 40641243 is 34214604.

40641243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40641243 - 2⁶ = 40641179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40641283) 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 7 ways as a sum of consecutive naturals, for example, 18130 + ... + 20247.

It is an arithmetic number, because the mean of its divisors is an integer number (6792906).

Almost surely, 2^40641243 is an apocalyptic number.

40641243 is a deficient number, since it is larger than the sum of its proper divisors (13702005).

40641243 is a wasteful number, since it uses less digits than its factorization.

40641243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38733.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 40641243 is about 6375.0484704040. The cubic root of 40641243 is about 343.8130265481.

Adding to 40641243 its reverse (34214604), we get a palindrome (74855847).

The spelling of 40641243 in words is "forty million, six hundred forty-one thousand, two hundred forty-three".