842225123939 has 4 divisors (see below), whose sum is σ = 842244347256. Its totient is φ = 842205900624.

The previous prime is 842225123921. The next prime is 842225123941. The reversal of 842225123939 is 939321522248.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 842225123939 - 2¹⁶ = 842225058403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (842225123039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9545789 + ... + 9633614.

It is an arithmetic number, because the mean of its divisors is an integer number (210561086814).

Almost surely, 2^842225123939 is an apocalyptic number.

842225123939 is a deficient number, since it is larger than the sum of its proper divisors (19223317).

842225123939 is a wasteful number, since it uses less digits than its factorization.

842225123939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19223316.

The product of its digits is 1866240, while the sum is 50.

The spelling of 842225123939 in words is "eight hundred forty-two billion, two hundred twenty-five million, one hundred twenty-three thousand, nine hundred thirty-nine".