43542035243 has 4 divisors (see below), whose sum is σ = 49762326000. Its totient is φ = 37321744488.

The previous prime is 43542035227. The next prime is 43542035291. The reversal of 43542035243 is 34253024534.

It is a happy number.

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

It is not a de Polignac number, because 43542035243 - 2⁴ = 43542035227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43542035443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3110145368 + ... + 3110145381.

It is an arithmetic number, because the mean of its divisors is an integer number (12440581500).

Almost surely, 2^43542035243 is an apocalyptic number.

43542035243 is a deficient number, since it is larger than the sum of its proper divisors (6220290757).

43542035243 is an equidigital number, since it uses as much as digits as its factorization.

43542035243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6220290756.

The product of its (nonzero) digits is 172800, while the sum is 35.

Adding to 43542035243 its reverse (34253024534), we get a palindrome (77795059777).

The spelling of 43542035243 in words is "forty-three billion, five hundred forty-two million, thirty-five thousand, two hundred forty-three".