43138302043 has 4 divisors (see below), whose sum is σ = 45675849240. Its totient is φ = 40600754848.

The previous prime is 43138302041. The next prime is 43138302089. The reversal of 43138302043 is 34020383134.

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 43138302043 - 2¹ = 43138302041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43138301996 and 43138302014.

It is not an unprimeable number, because it can be changed into a prime (43138302041) 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, 1268773573 + ... + 1268773606.

It is an arithmetic number, because the mean of its divisors is an integer number (11418962310).

Almost surely, 2^43138302043 is an apocalyptic number.

43138302043 is a deficient number, since it is larger than the sum of its proper divisors (2537547197).

43138302043 is a wasteful number, since it uses less digits than its factorization.

43138302043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2537547196.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 43138302043 its reverse (34020383134), we get a palindrome (77158685177).

The spelling of 43138302043 in words is "forty-three billion, one hundred thirty-eight million, three hundred two thousand, forty-three".