43520042 has 8 divisors (see below), whose sum is σ = 66798336. Its totient is φ = 21253932.

The previous prime is 43520041. The next prime is 43520083. The reversal of 43520042 is 24002534.

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

It is a junction number, because it is equal to n+sod(n) for n = 43519996 and 43520023.

It is not an unprimeable number, because it can be changed into a prime (43520041) 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, 252938 + ... + 253109.

It is an arithmetic number, because the mean of its divisors is an integer number (8349792).

Almost surely, 2^43520042 is an apocalyptic number.

43520042 is a deficient number, since it is larger than the sum of its proper divisors (23278294).

43520042 is a wasteful number, since it uses less digits than its factorization.

43520042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506092.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 43520042 is about 6596.9721842676. The cubic root of 43520042 is about 351.7464869263.

Adding to 43520042 its reverse (24002534), we get a palindrome (67522576).

The spelling of 43520042 in words is "forty-three million, five hundred twenty thousand, forty-two".