43242742 has 4 divisors (see below), whose sum is σ = 64864116. Its totient is φ = 21621370.

The previous prime is 43242739. The next prime is 43242743. The reversal of 43242742 is 24724234.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24724234 = 2 ⋅12362117.

It is a self number, because there is not a number n which added to its sum of digits gives 43242742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43242743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10810684 + ... + 10810687.

It is an arithmetic number, because the mean of its divisors is an integer number (16216029).

Almost surely, 2^43242742 is an apocalyptic number.

43242742 is a deficient number, since it is larger than the sum of its proper divisors (21621374).

43242742 is a wasteful number, since it uses less digits than its factorization.

43242742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21621373.

The product of its digits is 10752, while the sum is 28.

The square root of 43242742 is about 6575.9213803086. The cubic root of 43242742 is about 350.9978111513.

Adding to 43242742 its reverse (24724234), we get a palindrome (67966976).

The spelling of 43242742 in words is "forty-three million, two hundred forty-two thousand, seven hundred forty-two".