8720242 has 16 divisors (see below), whose sum is σ = 13608000. Its totient is φ = 4186000.

The previous prime is 8720233. The next prime is 8720281. The reversal of 8720242 is 2420278.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14259 + ... + 14857.

It is an arithmetic number, because the mean of its divisors is an integer number (850500).

Almost surely, 2^8720242 is an apocalyptic number.

8720242 is a deficient number, since it is larger than the sum of its proper divisors (4887758).

8720242 is a wasteful number, since it uses less digits than its factorization.

8720242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 8720242 is about 2953.0055875328. The cubic root of 8720242 is about 205.8303973676.

The spelling of 8720242 in words is "eight million, seven hundred twenty thousand, two hundred forty-two".