122679851 has 4 divisors (see below), whose sum is σ = 140205552. Its totient is φ = 105154152.

The previous prime is 122679833. The next prime is 122679863. The reversal of 122679851 is 158976221.

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 122679851 - 2²⁶ = 55570987 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122679799 and 122679808.

It is not an unprimeable number, because it can be changed into a prime (122679451) 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 3 ways as a sum of consecutive naturals, for example, 8762840 + ... + 8762853.

It is an arithmetic number, because the mean of its divisors is an integer number (35051388).

Almost surely, 2^122679851 is an apocalyptic number.

122679851 is a deficient number, since it is larger than the sum of its proper divisors (17525701).

122679851 is an equidigital number, since it uses as much as digits as its factorization.

122679851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17525700.

The product of its digits is 60480, while the sum is 41.

The square root of 122679851 is about 11076.0936706043. The cubic root of 122679851 is about 496.8871282775.

The spelling of 122679851 in words is "one hundred twenty-two million, six hundred seventy-nine thousand, eight hundred fifty-one".