122866778 has 8 divisors (see below), whose sum is σ = 186896160. Its totient is φ = 60568060.

The previous prime is 122866771. The next prime is 122866819. The reversal of 122866778 is 877668221.

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

It is a super-2 number, since 2×122866778² = 30192490272202568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122866771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 432488 + ... + 432771.

It is an arithmetic number, because the mean of its divisors is an integer number (23362020).

Almost surely, 2^122866778 is an apocalyptic number.

122866778 is a deficient number, since it is larger than the sum of its proper divisors (64029382).

122866778 is an equidigital number, since it uses as much as digits as its factorization.

122866778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865332.

The product of its digits is 451584, while the sum is 47.

The square root of 122866778 is about 11084.5287676112. The cubic root of 122866778 is about 497.1393687904.

The spelling of 122866778 in words is "one hundred twenty-two million, eight hundred sixty-six thousand, seven hundred seventy-eight".