43021020041 has 4 divisors (see below), whose sum is σ = 43069742352. Its totient is φ = 42972297732.

The previous prime is 43021020017. The next prime is 43021020067. The reversal of 43021020041 is 14002012034.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43021020041 - 2³⁴ = 25841150857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43021020941) 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, 24359831 + ... + 24361596.

It is an arithmetic number, because the mean of its divisors is an integer number (10767435588).

Almost surely, 2^43021020041 is an apocalyptic number.

It is an amenable number.

43021020041 is a deficient number, since it is larger than the sum of its proper divisors (48722311).

43021020041 is an equidigital number, since it uses as much as digits as its factorization.

43021020041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48722310.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 43021020041 its reverse (14002012034), we get a palindrome (57023032075).

The spelling of 43021020041 in words is "forty-three billion, twenty-one million, twenty thousand, forty-one".