43421434 has 16 divisors (see below), whose sum is σ = 78815808. Its totient is φ = 17514432.

The previous prime is 43421429. The next prime is 43421437. The reversal of 43421434 is 43412434.

It is a junction number, because it is equal to n+sod(n) for n = 43421399 and 43421408.

It is not an unprimeable number, because it can be changed into a prime (43421437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90984 + ... + 91459.

It is an arithmetic number, because the mean of its divisors is an integer number (4925988).

Almost surely, 2^43421434 is an apocalyptic number.

43421434 is a deficient number, since it is larger than the sum of its proper divisors (35394374).

43421434 is a wasteful number, since it uses less digits than its factorization.

43421434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182469.

The product of its digits is 4608, while the sum is 25.

The square root of 43421434 is about 6589.4942142778. The cubic root of 43421434 is about 351.4806228514.

Adding to 43421434 its reverse (43412434), we get a palindrome (86833868).

It can be divided in two parts, 4342 and 1434, that added together give a square (5776 = 76²).

The spelling of 43421434 in words is "forty-three million, four hundred twenty-one thousand, four hundred thirty-four".