43123133441 has 4 divisors (see below), whose sum is σ = 44288623572. Its totient is φ = 41957643312.

The previous prime is 43123133401. The next prime is 43123133461. The reversal of 43123133441 is 14433132134.

It is a happy number.

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 28385173441 + 14737960000 = 168479^2 + 121400^2 .

It is a cyclic number.

It is not a de Polignac number, because 43123133441 - 2⁶ = 43123133377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43123133401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 582745010 + ... + 582745083.

It is an arithmetic number, because the mean of its divisors is an integer number (11072155893).

Almost surely, 2^43123133441 is an apocalyptic number.

It is an amenable number.

43123133441 is a deficient number, since it is larger than the sum of its proper divisors (1165490131).

43123133441 is a wasteful number, since it uses less digits than its factorization.

43123133441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165490130.

The product of its digits is 10368, while the sum is 29.

Adding to 43123133441 its reverse (14433132134), we get a palindrome (57556265575).

The spelling of 43123133441 in words is "forty-three billion, one hundred twenty-three million, one hundred thirty-three thousand, four hundred forty-one".