43042445 has 4 divisors (see below), whose sum is σ = 51650940. Its totient is φ = 34433952.

The previous prime is 43042427. The next prime is 43042451. The reversal of 43042445 is 54424034.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8031556 + 35010889 = 2834^2 + 5917^2 .

It is a cyclic number.

It is not a de Polignac number, because 43042445 - 2⁶ = 43042381 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4304240 + ... + 4304249.

It is an arithmetic number, because the mean of its divisors is an integer number (12912735).

Almost surely, 2^43042445 is an apocalyptic number.

It is an amenable number.

43042445 is a deficient number, since it is larger than the sum of its proper divisors (8608495).

43042445 is an equidigital number, since it uses as much as digits as its factorization.

43042445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8608494.

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 43042445 is about 6560.6741269476. The cubic root of 43042445 is about 350.4550407906.

Adding to 43042445 its reverse (54424034), we get a palindrome (97466479).

It can be divided in two parts, 430 and 42445, that added together give a cube (42875 = 35³).

The spelling of 43042445 in words is "forty-three million, forty-two thousand, four hundred forty-five".