43033140421 has 4 divisors (see below), whose sum is σ = 43033557292. Its totient is φ = 43032723552.

The previous prime is 43033140419. The next prime is 43033140439. The reversal of 43033140421 is 12404133034.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 20566428100 + 22466712321 = 143410^2 + 149889^2 .

It is a cyclic number.

It is not a de Polignac number, because 43033140421 - 2¹ = 43033140419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43033140221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73771 + ... + 302503.

It is an arithmetic number, because the mean of its divisors is an integer number (10758389323).

Almost surely, 2^43033140421 is an apocalyptic number.

It is an amenable number.

43033140421 is a deficient number, since it is larger than the sum of its proper divisors (416871).

43033140421 is a wasteful number, since it uses less digits than its factorization.

43033140421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416870.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 43033140421 its reverse (12404133034), we get a palindrome (55437273455).

The spelling of 43033140421 in words is "forty-three billion, thirty-three million, one hundred forty thousand, four hundred twenty-one".