43522042 has 4 divisors (see below), whose sum is σ = 65283066. Its totient is φ = 21761020.

The previous prime is 43522007. The next prime is 43522051. The reversal of 43522042 is 24022534.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 23532201 + 19989841 = 4851^2 + 4471^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10880509 + ... + 10880512.

Almost surely, 2^43522042 is an apocalyptic number.

43522042 is a deficient number, since it is larger than the sum of its proper divisors (21761024).

43522042 is a wasteful number, since it uses less digits than its factorization.

43522042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21761023.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 43522042 is about 6597.1237672186. The cubic root of 43522042 is about 351.7518751120.

Adding to 43522042 its reverse (24022534), we get a palindrome (67544576).

The spelling of 43522042 in words is "forty-three million, five hundred twenty-two thousand, forty-two".