122842647 has 6 divisors (see below), whose sum is σ = 177439392. Its totient is φ = 81895092.

The previous prime is 122842633. The next prime is 122842649. The reversal of 122842647 is 746248221.

122842647 is a `hidden beast` number, since 1 + 2 + 2 + 8 + 4 + 2 + 647 = 666.

It is not a de Polignac number, because 122842647 - 2⁶ = 122842583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122842649) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6824583 + ... + 6824600.

It is an arithmetic number, because the mean of its divisors is an integer number (29573232).

Almost surely, 2^122842647 is an apocalyptic number.

122842647 is a deficient number, since it is larger than the sum of its proper divisors (54596745).

122842647 is a wasteful number, since it uses less digits than its factorization.

122842647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13649189 (or 13649186 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 122842647 is about 11083.4402150235. The cubic root of 122842647 is about 497.1068206496.

The spelling of 122842647 in words is "one hundred twenty-two million, eight hundred forty-two thousand, six hundred forty-seven".