43140240436 has 12 divisors (see below), whose sum is σ = 75504348612. Its totient is φ = 21567569408.

The previous prime is 43140240433. The next prime is 43140240443. The reversal of 43140240436 is 63404204134.

It can be written as a sum of positive squares in 2 ways, for example, as 23317290000 + 19822950436 = 152700^2 + 140794^2 .

It is a super-2 number, since 2×43140240436² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43140240398 and 43140240407.

It is a congruent number.

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, 599395 + ... + 667498.

It is an arithmetic number, because the mean of its divisors is an integer number (6292029051).

Almost surely, 2^43140240436 is an apocalyptic number.

It is an amenable number.

43140240436 is a deficient number, since it is larger than the sum of its proper divisors (32364108176).

43140240436 is a wasteful number, since it uses less digits than its factorization.

43140240436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1275410 (or 1275408 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

The spelling of 43140240436 in words is "forty-three billion, one hundred forty million, two hundred forty thousand, four hundred thirty-six".