43042434439 has 8 divisors (see below), whose sum is σ = 45349903872. Its totient is φ = 40771303320.

The previous prime is 43042434431. The next prime is 43042434473. The reversal of 43042434439 is 93443424034.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 43042434439 - 2³ = 43042434431 is a prime.

It is a super-2 number, since 2×43042434439² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43042434431) 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 7 ways as a sum of consecutive naturals, for example, 9082147 + ... + 9086884.

It is an arithmetic number, because the mean of its divisors is an integer number (5668737984).

Almost surely, 2^43042434439 is an apocalyptic number.

43042434439 is a deficient number, since it is larger than the sum of its proper divisors (2307469433).

43042434439 is a wasteful number, since it uses less digits than its factorization.

43042434439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18169157.

The product of its (nonzero) digits is 497664, while the sum is 40.

It can be divided in two parts, 43042 and 434439, that added together give a square (477481 = 691²).

The spelling of 43042434439 in words is "forty-three billion, forty-two million, four hundred thirty-four thousand, four hundred thirty-nine".