43421011 has 4 divisors (see below), whose sum is σ = 43851024. Its totient is φ = 42991000.

The previous prime is 43420969. The next prime is 43421039. The reversal of 43421011 is 11012434.

43421011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43421011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43421071) 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, 214855 + ... + 215056.

It is an arithmetic number, because the mean of its divisors is an integer number (10962756).

Almost surely, 2^43421011 is an apocalyptic number.

43421011 is a deficient number, since it is larger than the sum of its proper divisors (430013).

43421011 is a wasteful number, since it uses less digits than its factorization.

43421011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430012.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 43421011 is about 6589.4621176542. The cubic root of 43421011 is about 351.4794815043.

Adding to 43421011 its reverse (11012434), we get a palindrome (54433445).

The spelling of 43421011 in words is "forty-three million, four hundred twenty-one thousand, eleven".