43404145 has 24 divisors (see below), whose sum is σ = 56831544. Its totient is φ = 31712256.

The previous prime is 43404133. The next prime is 43404161. The reversal of 43404145 is 54140434.

43404145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 12 ways, for example, as 1115136 + 42289009 = 1056^2 + 6503^2 .

It is not a de Polignac number, because 43404145 - 2⁷ = 43404017 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116179 + ... + 116551.

It is an arithmetic number, because the mean of its divisors is an integer number (2367981).

Almost surely, 2^43404145 is an apocalyptic number.

It is an amenable number.

43404145 is a deficient number, since it is larger than the sum of its proper divisors (13427399).

43404145 is a wasteful number, since it uses less digits than its factorization.

43404145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469 (or 432 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 43404145 is about 6588.1822227379. The cubic root of 43404145 is about 351.4339672819.

Adding to 43404145 its reverse (54140434), we get a palindrome (97544579).

The spelling of 43404145 in words is "forty-three million, four hundred four thousand, one hundred forty-five".