199405122 has 16 divisors (see below), whose sum is σ = 455783232. Its totient is φ = 56972880.

The previous prime is 199405103. The next prime is 199405153. The reversal of 199405122 is 221504991.

199405122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 2373829 + ... + 2373912.

It is an arithmetic number, because the mean of its divisors is an integer number (28486452).

Almost surely, 2^199405122 is an apocalyptic number.

199405122 is an abundant number, since it is smaller than the sum of its proper divisors (256378110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199405122 is a wasteful number, since it uses less digits than its factorization.

199405122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4747753.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 199405122 is about 14121.0878476129. The cubic root of 199405122 is about 584.2231605545.

The spelling of 199405122 in words is "one hundred ninety-nine million, four hundred five thousand, one hundred twenty-two".