43958242 has 4 divisors (see below), whose sum is σ = 65937366. Its totient is φ = 21979120.

The previous prime is 43958219. The next prime is 43958249. The reversal of 43958242 is 24285934.

It is a happy number.

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., 43441281 + 516961 = 6591^2 + 719^2 .

It is not an unprimeable number, because it can be changed into a prime (43958249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10989559 + ... + 10989562.

Almost surely, 2^43958242 is an apocalyptic number.

43958242 is a deficient number, since it is larger than the sum of its proper divisors (21979124).

43958242 is a wasteful number, since it uses less digits than its factorization.

43958242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21979123.

The product of its digits is 69120, while the sum is 37.

The square root of 43958242 is about 6630.1012058641. The cubic root of 43958242 is about 352.9231161488.

The spelling of 43958242 in words is "forty-three million, nine hundred fifty-eight thousand, two hundred forty-two".