43420137 has 16 divisors (see below), whose sum is σ = 58732800. Its totient is φ = 28530432.

The previous prime is 43420133. The next prime is 43420199. The reversal of 43420137 is 73102434.

43420137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 43420137 - 2² = 43420133 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43420133) 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 15 ways as a sum of consecutive naturals, for example, 118128 + ... + 118494.

It is an arithmetic number, because the mean of its divisors is an integer number (3670800).

Almost surely, 2^43420137 is an apocalyptic number.

It is an amenable number.

43420137 is a deficient number, since it is larger than the sum of its proper divisors (15312663).

43420137 is a wasteful number, since it uses less digits than its factorization.

43420137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 43420137 is about 6589.3957993127. The cubic root of 43420137 is about 351.4771232364.

The spelling of 43420137 in words is "forty-three million, four hundred twenty thousand, one hundred thirty-seven".