122456109 has 8 divisors (see below), whose sum is σ = 163340320. Its totient is φ = 81604656.

The previous prime is 122456099. The next prime is 122456111. The reversal of 122456109 is 901654221.

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

It is not a de Polignac number, because 122456109 - 2⁵ = 122456077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122456119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2547 + ... + 15855.

It is an arithmetic number, because the mean of its divisors is an integer number (20417540).

Almost surely, 2^122456109 is an apocalyptic number.

It is an amenable number.

122456109 is a deficient number, since it is larger than the sum of its proper divisors (40884211).

122456109 is a wasteful number, since it uses less digits than its factorization.

122456109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16379.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 122456109 is about 11065.9888396835. The cubic root of 122456109 is about 496.5848722461.

The spelling of 122456109 in words is "one hundred twenty-two million, four hundred fifty-six thousand, one hundred nine".