43421330143 has 4 divisors (see below), whose sum is σ = 43819691080. Its totient is φ = 43022969208.

The previous prime is 43421330129. The next prime is 43421330159. The reversal of 43421330143 is 34103312434.

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 43421330143 - 2⁵ = 43421330111 is a prime.

It is a super-2 number, since 2×43421330143² (a number of 22 digits) contains 22 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 (43421330243) 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, 199180305 + ... + 199180522.

It is an arithmetic number, because the mean of its divisors is an integer number (10954922770).

Almost surely, 2^43421330143 is an apocalyptic number.

43421330143 is a deficient number, since it is larger than the sum of its proper divisors (398360937).

43421330143 is a wasteful number, since it uses less digits than its factorization.

43421330143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398360936.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 43421330143 its reverse (34103312434), we get a palindrome (77524642577).

The spelling of 43421330143 in words is "forty-three billion, four hundred twenty-one million, three hundred thirty thousand, one hundred forty-three".