2121304194 has 32 divisors (see below), whose sum is σ = 4728290880. Its totient is φ = 704959200.

The previous prime is 2121304181. The next prime is 2121304201. The reversal of 2121304194 is 4914031212.

It is a happy number.

2121304194 is a `hidden beast` number, since 212 + 1 + 30 + 419 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41467 + ... + 77214.

It is an arithmetic number, because the mean of its divisors is an integer number (147759090).

Almost surely, 2^2121304194 is an apocalyptic number.

2121304194 is an abundant number, since it is smaller than the sum of its proper divisors (2606986686).

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

2121304194 is a wasteful number, since it uses less digits than its factorization.

2121304194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119023 (or 119017 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 2121304194 is about 46057.6181972103. The cubic root of 2121304194 is about 1284.8950327840.

The spelling of 2121304194 in words is "two billion, one hundred twenty-one million, three hundred four thousand, one hundred ninety-four".