43140240434 has 8 divisors (see below), whose sum is σ = 68516852508. Its totient is φ = 20301289600.

The previous prime is 43140240433. The next prime is 43140240443. The reversal of 43140240434 is 43404204134.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 41576433409 + 1563807025 = 203903^2 + 39545^2 .

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

It is a super-2 number, since 2×43140240434² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43140240397 and 43140240406.

It is not an unprimeable number, because it can be changed into a prime (43140240433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 634415267 + ... + 634415334.

Almost surely, 2^43140240434 is an apocalyptic number.

43140240434 is a deficient number, since it is larger than the sum of its proper divisors (25376612074).

43140240434 is a wasteful number, since it uses less digits than its factorization.

43140240434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268830620.

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

Adding to 43140240434 its reverse (43404204134), we get a palindrome (86544444568).

The spelling of 43140240434 in words is "forty-three billion, one hundred forty million, two hundred forty thousand, four hundred thirty-four".