43022138 has 16 divisors (see below), whose sum is σ = 70687080. Its totient is φ = 19547136.

The previous prime is 43022131. The next prime is 43022143. The reversal of 43022138 is 83122034.

43022138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 42994249 + 27889 = 6557^2 + 167^2 .

It is not an unprimeable number, because it can be changed into a prime (43022131) 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 7 ways as a sum of consecutive naturals, for example, 20831 + ... + 22802.

Almost surely, 2^43022138 is an apocalyptic number.

43022138 is a deficient number, since it is larger than the sum of its proper divisors (27664942).

43022138 is a wasteful number, since it uses less digits than its factorization.

43022138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43681.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 43022138 is about 6559.1263137708. The cubic root of 43022138 is about 350.3999183798.

The spelling of 43022138 in words is "forty-three million, twenty-two thousand, one hundred thirty-eight".