842620785 has 8 divisors (see below), whose sum is σ = 1348193280. Its totient is φ = 449397744.

The previous prime is 842620769. The next prime is 842620787. The reversal of 842620785 is 587026248.

It is a happy number.

842620785 is digitally balanced in base 6, 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 not a de Polignac number, because 842620785 - 2⁴ = 842620769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (842620787) by changing a digit.

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, 28087345 + ... + 28087374.

It is an arithmetic number, because the mean of its divisors is an integer number (168524160).

Almost surely, 2^842620785 is an apocalyptic number.

It is an amenable number.

842620785 is a deficient number, since it is larger than the sum of its proper divisors (505572495).

842620785 is a wasteful number, since it uses less digits than its factorization.

842620785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56174727.

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 842620785 is about 29027.9311181489. The cubic root of 842620785 is about 944.5190520403.

The spelling of 842620785 in words is "eight hundred forty-two million, six hundred twenty thousand, seven hundred eighty-five".