122456805 has 16 divisors (see below), whose sum is σ = 206243520. Its totient is φ = 61872768.

The previous prime is 122456779. The next prime is 122456809. The reversal of 122456805 is 508654221.

It is not a de Polignac number, because 122456805 - 2⁵ = 122456773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122456809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214552 + ... + 215121.

It is an arithmetic number, because the mean of its divisors is an integer number (12890220).

Almost surely, 2^122456805 is an apocalyptic number.

122456805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122456805 is a deficient number, since it is larger than the sum of its proper divisors (83786715).

122456805 is a wasteful number, since it uses less digits than its factorization.

122456805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429700.

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 122456805 is about 11066.0202873481. The cubic root of 122456805 is about 496.5858130524.

The spelling of 122456805 in words is "one hundred twenty-two million, four hundred fifty-six thousand, eight hundred five".