43209105424 has 45 divisors (see below), whose sum is σ = 84509585181. Its totient is φ = 21402089280.

The previous prime is 43209105403. The next prime is 43209105427. The reversal of 43209105424 is 42450190234.

The square root of 43209105424 is 207868.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 12665251600 + 30543853824 = 112540^2 + 174768^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43209105424.

It is not an unprimeable number, because it can be changed into a prime (43209105427) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 130540939 + ... + 130541269.

Almost surely, 2^43209105424 is an apocalyptic number.

43209105424 is the 207868-th square number.

It is an amenable number.

43209105424 is a deficient number, since it is larger than the sum of its proper divisors (41300479757).

43209105424 is an frugal number, since it uses more digits than its factorization.

43209105424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

Adding to 43209105424 its reverse (42450190234), we get a palindrome (85659295658).

The spelling of 43209105424 in words is "forty-three billion, two hundred nine million, one hundred five thousand, four hundred twenty-four".