43420117 has 4 divisors (see below), whose sum is σ = 46760140. Its totient is φ = 40080096.

The previous prime is 43420109. The next prime is 43420127. The reversal of 43420117 is 71102434.

43420117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15952036 + 27468081 = 3994^2 + 5241^2 .

It is a cyclic number.

It is not a de Polignac number, because 43420117 - 2³ = 43420109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43420127) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1669992 + ... + 1670017.

It is an arithmetic number, because the mean of its divisors is an integer number (11690035).

Almost surely, 2^43420117 is an apocalyptic number.

It is an amenable number.

43420117 is a deficient number, since it is larger than the sum of its proper divisors (3340023).

43420117 is a wasteful number, since it uses less digits than its factorization.

43420117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3340022.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 43420117 is about 6589.3942817227. The cubic root of 43420117 is about 351.4770692711.

The spelling of 43420117 in words is "forty-three million, four hundred twenty thousand, one hundred seventeen".