122808278 has 8 divisors (see below), whose sum is σ = 184641120. Its totient is φ = 61261240.

The previous prime is 122808277. The next prime is 122808281. The reversal of 122808278 is 872808221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122808277) 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, 70373 + ... + 72096.

It is an arithmetic number, because the mean of its divisors is an integer number (23080140).

Almost surely, 2^122808278 is an apocalyptic number.

122808278 is a deficient number, since it is larger than the sum of its proper divisors (61832842).

122808278 is a wasteful number, since it uses less digits than its factorization.

122808278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142902.

The product of its (nonzero) digits is 28672, while the sum is 38.

The square root of 122808278 is about 11081.8896403095. The cubic root of 122808278 is about 497.0604560296.

The spelling of 122808278 in words is "one hundred twenty-two million, eight hundred eight thousand, two hundred seventy-eight".