43421930 has 16 divisors (see below), whose sum is σ = 81558144. Its totient is φ = 16613520.

The previous prime is 43421923. The next prime is 43421947. The reversal of 43421930 is 3912434.

It is a self number, because there is not a number n which added to its sum of digits gives 43421930.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94166 + ... + 94625.

It is an arithmetic number, because the mean of its divisors is an integer number (5097384).

Almost surely, 2^43421930 is an apocalyptic number.

43421930 is a deficient number, since it is larger than the sum of its proper divisors (38136214).

43421930 is a wasteful number, since it uses less digits than its factorization.

43421930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188821.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 43421930 is about 6589.5318498358. The cubic root of 43421930 is about 351.4819611591.

The spelling of 43421930 in words is "forty-three million, four hundred twenty-one thousand, nine hundred thirty".