43641243 has 6 divisors (see below), whose sum is σ = 63037364. Its totient is φ = 29094156.

The previous prime is 43641229. The next prime is 43641253. The reversal of 43641243 is 34214634.

It is not a de Polignac number, because 43641243 - 2⁹ = 43640731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43641223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2424505 + ... + 2424522.

Almost surely, 2^43641243 is an apocalyptic number.

43641243 is a deficient number, since it is larger than the sum of its proper divisors (19396121).

43641243 is a wasteful number, since it uses less digits than its factorization.

43641243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4849033 (or 4849030 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 43641243 is about 6606.1519056104. The cubic root of 43641243 is about 352.0727160164.

Adding to 43641243 its reverse (34214634), we get a palindrome (77855877).

The spelling of 43641243 in words is "forty-three million, six hundred forty-one thousand, two hundred forty-three".