43042225 has 6 divisors (see below), whose sum is σ = 53372390. Its totient is φ = 34433760.

The previous prime is 43042193. The next prime is 43042267. The reversal of 43042225 is 52224034.

It can be written as a sum of positive squares in 3 ways, for example, as 2985984 + 40056241 = 1728^2 + 6329^2 .

It is not a de Polignac number, because 43042225 - 2⁵ = 43042193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43042196 and 43042205.

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 5 ways as a sum of consecutive naturals, for example, 860820 + ... + 860869.

Almost surely, 2^43042225 is an apocalyptic number.

It is an amenable number.

43042225 is a deficient number, since it is larger than the sum of its proper divisors (10330165).

43042225 is a wasteful number, since it uses less digits than its factorization.

43042225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1721699 (or 1721694 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 43042225 is about 6560.6573603565. The cubic root of 43042225 is about 350.4544437037.

Adding to 43042225 its reverse (52224034), we get a palindrome (95266259).

The spelling of 43042225 in words is "forty-three million, forty-two thousand, two hundred twenty-five".