43240433 has 2 divisors, whose sum is σ = 43240434. Its totient is φ = 43240432.

The previous prime is 43240429. The next prime is 43240453. The reversal of 43240433 is 33404234.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35129329 + 8111104 = 5927^2 + 2848^2 .

It is a cyclic number.

It is not a de Polignac number, because 43240433 - 2² = 43240429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43240399 and 43240408.

It is not a weakly prime, because it can be changed into another prime (43240453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21620216 + 21620217.

It is an arithmetic number, because the mean of its divisors is an integer number (21620217).

Almost surely, 2^43240433 is an apocalyptic number.

It is an amenable number.

43240433 is a deficient number, since it is larger than the sum of its proper divisors (1).

43240433 is an equidigital number, since it uses as much as digits as its factorization.

43240433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 43240433 is about 6575.7458132139. The cubic root of 43240433 is about 350.9915637185.

Adding to 43240433 its reverse (33404234), we get a palindrome (76644667).

The spelling of 43240433 in words is "forty-three million, two hundred forty thousand, four hundred thirty-three".