43819042 has 4 divisors (see below), whose sum is σ = 65728566. Its totient is φ = 21909520.

The previous prime is 43819019. The next prime is 43819049. The reversal of 43819042 is 24091834.

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., 36469521 + 7349521 = 6039^2 + 2711^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 43818995 and 43819013.

It is not an unprimeable number, because it can be changed into a prime (43819049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10954759 + ... + 10954762.

Almost surely, 2^43819042 is an apocalyptic number.

43819042 is a deficient number, since it is larger than the sum of its proper divisors (21909524).

43819042 is a wasteful number, since it uses less digits than its factorization.

43819042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21909523.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 43819042 is about 6619.5953048506. The cubic root of 43819042 is about 352.5501952227.

The spelling of 43819042 in words is "forty-three million, eight hundred nineteen thousand, forty-two".