842122423620 has 36 divisors (see below), whose sum is σ = 2554438018860. Its totient is φ = 224565979584.

The previous prime is 842122423579. The next prime is 842122423621. The reversal of 842122423620 is 26324221248.

842122423620 is a `hidden beast` number, since 8 + 4 + 2 + 1 + 2 + 2 + 4 + 23 + 620 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 656595813636 + 185526609984 = 810306^2 + 430728^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (842122423621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2339228775 + ... + 2339229134.

It is an arithmetic number, because the mean of its divisors is an integer number (70956611635).

Almost surely, 2^842122423620 is an apocalyptic number.

It is an amenable number.

842122423620 is an abundant number, since it is smaller than the sum of its proper divisors (1712315595240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

842122423620 is a wasteful number, since it uses less digits than its factorization.

842122423620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4678457924 (or 4678457919 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 36.

Adding to 842122423620 its reverse (26324221248), we get a palindrome (868446644868).

The spelling of 842122423620 in words is "eight hundred forty-two billion, one hundred twenty-two million, four hundred twenty-three thousand, six hundred twenty".