40543243 has 8 divisors (see below), whose sum is σ = 43848000. Its totient is φ = 37265088.

The previous prime is 40543229. The next prime is 40543253. The reversal of 40543243 is 34234504.

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

It is a cyclic number.

It is not a de Polignac number, because 40543243 - 2⁵ = 40543211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40543253) 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 7 ways as a sum of consecutive naturals, for example, 3418 + ... + 9631.

It is an arithmetic number, because the mean of its divisors is an integer number (5481000).

Almost surely, 2^40543243 is an apocalyptic number.

40543243 is a deficient number, since it is larger than the sum of its proper divisors (3304757).

40543243 is a wasteful number, since it uses less digits than its factorization.

40543243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13301.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 40543243 is about 6367.3576152121. The cubic root of 40543243 is about 343.5364536811.

Adding to 40543243 its reverse (34234504), we get a palindrome (74777747).

The spelling of 40543243 in words is "forty million, five hundred forty-three thousand, two hundred forty-three".