122278078 has 8 divisors (see below), whose sum is σ = 197526168. Its totient is φ = 56436024.

The previous prime is 122278073. The next prime is 122278147. The reversal of 122278078 is 870872221.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122278073) 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, 2351476 + ... + 2351527.

It is an arithmetic number, because the mean of its divisors is an integer number (24690771).

Almost surely, 2^122278078 is an apocalyptic number.

122278078 is a deficient number, since it is larger than the sum of its proper divisors (75248090).

122278078 is a wasteful number, since it uses less digits than its factorization.

122278078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4703018.

The product of its (nonzero) digits is 25088, while the sum is 37.

The square root of 122278078 is about 11057.9418518999. The cubic root of 122278078 is about 496.3441046763.

The spelling of 122278078 in words is "one hundred twenty-two million, two hundred seventy-eight thousand, seventy-eight".