42724318 has 16 divisors (see below), whose sum is σ = 78876000. Its totient is φ = 16901856.

The previous prime is 42724303. The next prime is 42724373. The reversal of 42724318 is 81342724.

It is a self number, because there is not a number n which added to its sum of digits gives 42724318.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 117193 + ... + 117556.

It is an arithmetic number, because the mean of its divisors is an integer number (4929750).

Almost surely, 2^42724318 is an apocalyptic number.

42724318 is a deficient number, since it is larger than the sum of its proper divisors (36151682).

42724318 is a wasteful number, since it uses less digits than its factorization.

42724318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234771.

The product of its digits is 10752, while the sum is 31.

The square root of 42724318 is about 6536.3841686364. The cubic root of 42724318 is about 349.5894996820.

The spelling of 42724318 in words is "forty-two million, seven hundred twenty-four thousand, three hundred eighteen".