43223042440 has 32 divisors (see below), whose sum is σ = 97338087000. Its totient is φ = 17273885184.

The previous prime is 43223042413. The next prime is 43223042461. The reversal of 43223042440 is 4424032234.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 38379160836 + 4843881604 = 195906^2 + 69598^2 .

It is a junction number, because it is equal to n+sod(n) for n = 43223042399 and 43223042408.

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, 433395 + ... + 523714.

Almost surely, 2^43223042440 is an apocalyptic number.

43223042440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43223042440 is an abundant number, since it is smaller than the sum of its proper divisors (54115044560).

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

43223042440 is a wasteful number, since it uses less digits than its factorization.

43223042440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958249 (or 958245 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 43223042440 its reverse (4424032234), we get a palindrome (47647074674).

The spelling of 43223042440 in words is "forty-three billion, two hundred twenty-three million, forty-two thousand, four hundred forty".