43422143 has 4 divisors (see below), whose sum is σ = 43437720. Its totient is φ = 43406568.

The previous prime is 43422139. The next prime is 43422161. The reversal of 43422143 is 34122434.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 43422143 - 2² = 43422139 is a prime.

It is a super-3 number, since 3×43422143³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43422133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2333 + ... + 9606.

It is an arithmetic number, because the mean of its divisors is an integer number (10859430).

Almost surely, 2^43422143 is an apocalyptic number.

43422143 is a deficient number, since it is larger than the sum of its proper divisors (15577).

43422143 is a wasteful number, since it uses less digits than its factorization.

43422143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15576.

The product of its digits is 2304, while the sum is 23.

The square root of 43422143 is about 6589.5480118139. The cubic root of 43422143 is about 351.4825358728.

Adding to 43422143 its reverse (34122434), we get a palindrome (77544577).

The spelling of 43422143 in words is "forty-three million, four hundred twenty-two thousand, one hundred forty-three".