122456678 has 16 divisors (see below), whose sum is σ = 194717520. Its totient is φ = 57559296.

The previous prime is 122456617. The next prime is 122456687. The reversal of 122456678 is 876654221.

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 39053 + ... + 42071.

It is an arithmetic number, because the mean of its divisors is an integer number (12169845).

Almost surely, 2^122456678 is an apocalyptic number.

122456678 is a deficient number, since it is larger than the sum of its proper divisors (72260842).

122456678 is a wasteful number, since it uses less digits than its factorization.

122456678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4231.

The product of its digits is 161280, while the sum is 41.

The square root of 122456678 is about 11066.0145490597. The cubic root of 122456678 is about 496.5856413825.

The spelling of 122456678 in words is "one hundred twenty-two million, four hundred fifty-six thousand, six hundred seventy-eight".