122471687 has 4 divisors (see below), whose sum is σ = 131892600. Its totient is φ = 113050776.

The previous prime is 122471677. The next prime is 122471693. The reversal of 122471687 is 786174221.

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 122471687 - 2²⁰ = 121423111 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 122471687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122471627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4710437 + ... + 4710462.

It is an arithmetic number, because the mean of its divisors is an integer number (32973150).

Almost surely, 2^122471687 is an apocalyptic number.

122471687 is a deficient number, since it is larger than the sum of its proper divisors (9420913).

122471687 is an equidigital number, since it uses as much as digits as its factorization.

122471687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9420912.

The product of its digits is 37632, while the sum is 38.

The square root of 122471687 is about 11066.6926857124. The cubic root of 122471687 is about 496.6059286916.

The spelling of 122471687 in words is "one hundred twenty-two million, four hundred seventy-one thousand, six hundred eighty-seven".