122390855 has 4 divisors (see below), whose sum is σ = 146869032. Its totient is φ = 97912680.

The previous prime is 122390819. The next prime is 122390881. The reversal of 122390855 is 558093221.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 122390855 - 2⁶ = 122390791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12239081 + ... + 12239090.

It is an arithmetic number, because the mean of its divisors is an integer number (36717258).

Almost surely, 2^122390855 is an apocalyptic number.

122390855 is a deficient number, since it is larger than the sum of its proper divisors (24478177).

122390855 is an equidigital number, since it uses as much as digits as its factorization.

122390855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24478176.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 122390855 is about 11063.0400433154. The cubic root of 122390855 is about 496.4966504143.

The spelling of 122390855 in words is "one hundred twenty-two million, three hundred ninety thousand, eight hundred fifty-five".