720224042 has 8 divisors (see below), whose sum is σ = 1086372000. Its totient is φ = 358100044.

The previous prime is 720224009. The next prime is 720224053. The reversal of 720224042 is 240422027.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 720223999 and 720224017.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1005542 + ... + 1006257.

It is an arithmetic number, because the mean of its divisors is an integer number (135796500).

Almost surely, 2^720224042 is an apocalyptic number.

720224042 is a deficient number, since it is larger than the sum of its proper divisors (366147958).

720224042 is a wasteful number, since it uses less digits than its factorization.

720224042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2011980.

The product of its (nonzero) digits is 1792, while the sum is 23.

The square root of 720224042 is about 26836.9901814641. The cubic root of 720224042 is about 896.3739047522.

Adding to 720224042 its reverse (240422027), we get a palindrome (960646069).

The spelling of 720224042 in words is "seven hundred twenty million, two hundred twenty-four thousand, forty-two".