43791842 has 4 divisors (see below), whose sum is σ = 65687766. Its totient is φ = 21895920.

The previous prime is 43791841. The next prime is 43791851. The reversal of 43791842 is 24819734.

43791842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 40972801 + 2819041 = 6401^2 + 1679^2 .

It is a junction number, because it is equal to n+sod(n) for n = 43791796 and 43791805.

It is not an unprimeable number, because it can be changed into a prime (43791841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10947959 + ... + 10947962.

Almost surely, 2^43791842 is an apocalyptic number.

43791842 is a deficient number, since it is larger than the sum of its proper divisors (21895924).

43791842 is a wasteful number, since it uses less digits than its factorization.

43791842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21895923.

The product of its digits is 48384, while the sum is 38.

The square root of 43791842 is about 6617.5404796646. The cubic root of 43791842 is about 352.4772334105.

The spelling of 43791842 in words is "forty-three million, seven hundred ninety-one thousand, eight hundred forty-two".