43421042 has 32 divisors (see below), whose sum is σ = 78796800. Its totient is φ = 17530128.

The previous prime is 43421039. The next prime is 43421047. The reversal of 43421042 is 24012434.

43421042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (43421047) 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, 63233 + ... + 63915.

It is an arithmetic number, because the mean of its divisors is an integer number (2462400).

Almost surely, 2^43421042 is an apocalyptic number.

43421042 is a deficient number, since it is larger than the sum of its proper divisors (35375758).

43421042 is a wasteful number, since it uses less digits than its factorization.

43421042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 43421042 is about 6589.4644698943. The cubic root of 43421042 is about 351.4795651493.

Adding to 43421042 its reverse (24012434), we get a palindrome (67433476).

The spelling of 43421042 in words is "forty-three million, four hundred twenty-one thousand, forty-two".