122178345 has 8 divisors (see below), whose sum is σ = 195485376. Its totient is φ = 65161776.

The previous prime is 122178317. The next prime is 122178367. The reversal of 122178345 is 543871221.

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

It is not a de Polignac number, because 122178345 - 2¹⁵ = 122145577 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4072597 + ... + 4072626.

It is an arithmetic number, because the mean of its divisors is an integer number (24435672).

Almost surely, 2^122178345 is an apocalyptic number.

122178345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122178345 is a deficient number, since it is larger than the sum of its proper divisors (73307031).

122178345 is an equidigital number, since it uses as much as digits as its factorization.

122178345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8145231.

The product of its digits is 13440, while the sum is 33.

The square root of 122178345 is about 11053.4313676795. The cubic root of 122178345 is about 496.2091244961.

The spelling of 122178345 in words is "one hundred twenty-two million, one hundred seventy-eight thousand, three hundred forty-five".