43321138 has 16 divisors (see below), whose sum is σ = 74539584. Its totient is φ = 18497520.

The previous prime is 43321129. The next prime is 43321139. The reversal of 43321138 is 83112334.

It is not an unprimeable number, because it can be changed into a prime (43321139) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1708 + ... + 9463.

It is an arithmetic number, because the mean of its divisors is an integer number (4658724).

Almost surely, 2^43321138 is an apocalyptic number.

43321138 is a deficient number, since it is larger than the sum of its proper divisors (31218446).

43321138 is a wasteful number, since it uses less digits than its factorization.

43321138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11457.

The product of its digits is 1728, while the sum is 25.

The square root of 43321138 is about 6581.8795188001. The cubic root of 43321138 is about 351.2097944128.

The spelling of 43321138 in words is "forty-three million, three hundred twenty-one thousand, one hundred thirty-eight".