43320642 has 8 divisors (see below), whose sum is σ = 86641296. Its totient is φ = 14440212.

The previous prime is 43320637. The next prime is 43320643. The reversal of 43320642 is 24602334.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

43320642 is an admirable number.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (43320643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3610048 + ... + 3610059.

It is an arithmetic number, because the mean of its divisors is an integer number (10830162).

Almost surely, 2^43320642 is an apocalyptic number.

43320642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43320642 is a wasteful number, since it uses less digits than its factorization.

43320642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7220112.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 43320642 is about 6581.8418394854. The cubic root of 43320642 is about 351.2084540300.

Adding to 43320642 its reverse (24602334), we get a palindrome (67922976).

The spelling of 43320642 in words is "forty-three million, three hundred twenty thousand, six hundred forty-two".