7042320655 has 8 divisors (see below), whose sum is σ = 8451481392. Its totient is φ = 5633392128.

The previous prime is 7042320641. The next prime is 7042320689. The reversal of 7042320655 is 5560232407.

7042320655 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7042320655 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7042320655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17647 + ... + 119983.

It is an arithmetic number, because the mean of its divisors is an integer number (1056435174).

Almost surely, 2^7042320655 is an apocalyptic number.

7042320655 is a deficient number, since it is larger than the sum of its proper divisors (1409160737).

7042320655 is a wasteful number, since it uses less digits than its factorization.

7042320655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116105.

The product of its (nonzero) digits is 50400, while the sum is 34.

The square root of 7042320655 is about 83918.5358249296. The cubic root of 7042320655 is about 1916.7785112133.

The spelling of 7042320655 in words is "seven billion, forty-two million, three hundred twenty thousand, six hundred fifty-five".