43134421 has 16 divisors (see below), whose sum is σ = 48299328. Its totient is φ = 38188800.

The previous prime is 43134409. The next prime is 43134431. The reversal of 43134421 is 12443134.

43134421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 43134421 - 2¹¹ = 43132373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43134392 and 43134401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43134401) 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 15 ways as a sum of consecutive naturals, for example, 140350 + ... + 140656.

It is an arithmetic number, because the mean of its divisors is an integer number (3018708).

Almost surely, 2^43134421 is an apocalyptic number.

It is an amenable number.

43134421 is a deficient number, since it is larger than the sum of its proper divisors (5164907).

43134421 is a wasteful number, since it uses less digits than its factorization.

43134421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612.

The product of its digits is 1152, while the sum is 22.

The square root of 43134421 is about 6567.6800317920. The cubic root of 43134421 is about 350.7044885199.

Adding to 43134421 its reverse (12443134), we get a palindrome (55577555).

The spelling of 43134421 in words is "forty-three million, one hundred thirty-four thousand, four hundred twenty-one".