43042434440 has 32 divisors (see below), whose sum is σ = 96881681880. Its totient is φ = 17210537472.

The previous prime is 43042434431. The next prime is 43042434473. The reversal of 43042434440 is 4443424034.

It can be written as a sum of positive squares in 4 ways, for example, as 39834571396 + 3207863044 = 199586^2 + 56638^2 .

It is a super-2 number, since 2×43042434440² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43042434397 and 43042434406.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92069 + ... + 307508.

Almost surely, 2^43042434440 is an apocalyptic number.

43042434440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43042434440 is an abundant number, since it is smaller than the sum of its proper divisors (53839247440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43042434440 is a wasteful number, since it uses less digits than its factorization.

43042434440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402281 (or 402277 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 32.

Adding to 43042434440 its reverse (4443424034), we get a palindrome (47485858474).

The spelling of 43042434440 in words is "forty-three billion, forty-two million, four hundred thirty-four thousand, four hundred forty".