43240342399 has 4 divisors (see below), whose sum is σ = 43580817664. Its totient is φ = 42899867136.

The previous prime is 43240342393. The next prime is 43240342403. The reversal of 43240342399 is 99324304234.

43240342399 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 43240342399 - 2³ = 43240342391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43240342391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170237442 + ... + 170237695.

It is an arithmetic number, because the mean of its divisors is an integer number (10895204416).

Almost surely, 2^43240342399 is an apocalyptic number.

43240342399 is a deficient number, since it is larger than the sum of its proper divisors (340475265).

43240342399 is a wasteful number, since it uses less digits than its factorization.

43240342399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340475264.

The product of its (nonzero) digits is 559872, while the sum is 43.

The spelling of 43240342399 in words is "forty-three billion, two hundred forty million, three hundred forty-two thousand, three hundred ninety-nine".