43401143 has 4 divisors (see below), whose sum is σ = 43587648. Its totient is φ = 43214640.

The previous prime is 43401131. The next prime is 43401151. The reversal of 43401143 is 34110434.

It is a happy number.

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 43401143 - 2⁸ = 43400887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43400143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92903 + ... + 93368.

It is an arithmetic number, because the mean of its divisors is an integer number (10896912).

Almost surely, 2^43401143 is an apocalyptic number.

43401143 is a deficient number, since it is larger than the sum of its proper divisors (186505).

43401143 is a wasteful number, since it uses less digits than its factorization.

43401143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186504.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 43401143 is about 6587.9543866059. The cubic root of 43401143 is about 351.4258649137.

Adding to 43401143 its reverse (34110434), we get a palindrome (77511577).

The spelling of 43401143 in words is "forty-three million, four hundred one thousand, one hundred forty-three".