43141432021 has 4 divisors (see below), whose sum is σ = 43143940044. Its totient is φ = 43138924000.

The previous prime is 43141432003. The next prime is 43141432027. The reversal of 43141432021 is 12023414134.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30154322500 + 12987109521 = 173650^2 + 113961^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43141432021 is a prime.

It is a super-2 number, since 2×43141432021² (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 (43141432027) 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, 1228030 + ... + 1262671.

It is an arithmetic number, because the mean of its divisors is an integer number (10785985011).

Almost surely, 2^43141432021 is an apocalyptic number.

It is an amenable number.

43141432021 is a deficient number, since it is larger than the sum of its proper divisors (2508023).

43141432021 is a wasteful number, since it uses less digits than its factorization.

43141432021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2508022.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 43141432021 its reverse (12023414134), we get a palindrome (55164846155).

The spelling of 43141432021 in words is "forty-three billion, one hundred forty-one million, four hundred thirty-two thousand, twenty-one".