43140023 has 8 divisors (see below), whose sum is σ = 44718480. Its totient is φ = 41567680.

The previous prime is 43140011. The next prime is 43140037. The reversal of 43140023 is 32004134.

43140023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43140023 is a prime.

It is a super-2 number, since 2×43140023² = 3722123168881058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43139983 and 43140010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43145023) 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, 16688 + ... + 19098.

It is an arithmetic number, because the mean of its divisors is an integer number (5589810).

Almost surely, 2^43140023 is an apocalyptic number.

43140023 is a deficient number, since it is larger than the sum of its proper divisors (1578457).

43140023 is a wasteful number, since it uses less digits than its factorization.

43140023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3057.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 43140023 is about 6568.1065003546. The cubic root of 43140023 is about 350.7196702198.

Adding to 43140023 its reverse (32004134), we get a palindrome (75144157).

The spelling of 43140023 in words is "forty-three million, one hundred forty thousand, twenty-three".