43140240443 has 2 divisors, whose sum is σ = 43140240444. Its totient is φ = 43140240442.

The previous prime is 43140240433. The next prime is 43140240463. The reversal of 43140240443 is 34404204134.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43140240443 - 2¹⁰ = 43140239419 is a prime.

It is a super-2 number, since 2×43140240443² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43140240433) 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 as a sum of consecutive naturals, namely, 21570120221 + 21570120222.

It is an arithmetic number, because the mean of its divisors is an integer number (21570120222).

Almost surely, 2^43140240443 is an apocalyptic number.

43140240443 is a deficient number, since it is larger than the sum of its proper divisors (1).

43140240443 is an equidigital number, since it uses as much as digits as its factorization.

43140240443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 43140240443 its reverse (34404204134), we get a palindrome (77544444577).

The spelling of 43140240443 in words is "forty-three billion, one hundred forty million, two hundred forty thousand, four hundred forty-three".