43243405 has 8 divisors (see below), whose sum is σ = 52351992. Its totient is φ = 34288128.

The previous prime is 43243399. The next prime is 43243429. The reversal of 43243405 is 50434234.

It can be written as a sum of positive squares in 4 ways, for example, as 4268356 + 38975049 = 2066^2 + 6243^2 .

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 43243405 - 2⁹ = 43242893 is a prime.

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 43243405.

It is a congruent number.

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, 37704 + ... + 38833.

It is an arithmetic number, because the mean of its divisors is an integer number (6543999).

Almost surely, 2^43243405 is an apocalyptic number.

It is an amenable number.

43243405 is a deficient number, since it is larger than the sum of its proper divisors (9108587).

43243405 is a wasteful number, since it uses less digits than its factorization.

43243405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76655.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 43243405 is about 6575.9717913020. The cubic root of 43243405 is about 350.9996049811. Note that the first 3 decimals are identical.

Adding to 43243405 its reverse (50434234), we get a palindrome (93677639).

The spelling of 43243405 in words is "forty-three million, two hundred forty-three thousand, four hundred five".