122961878 has 16 divisors (see below), whose sum is σ = 204000720. Its totient is φ = 55217376.

The previous prime is 122961877. The next prime is 122961889. The reversal of 122961878 is 878169221.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122961877) 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 7 ways as a sum of consecutive naturals, for example, 62948 + ... + 64871.

It is an arithmetic number, because the mean of its divisors is an integer number (12750045).

Almost surely, 2^122961878 is an apocalyptic number.

122961878 is a deficient number, since it is larger than the sum of its proper divisors (81038842).

122961878 is a wasteful number, since it uses less digits than its factorization.

122961878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127871.

The product of its digits is 96768, while the sum is 44.

The square root of 122961878 is about 11088.8177007290. The cubic root of 122961878 is about 497.2675991716.

The spelling of 122961878 in words is "one hundred twenty-two million, nine hundred sixty-one thousand, eight hundred seventy-eight".