192121140 has 24 divisors (see below), whose sum is σ = 537939360. Its totient is φ = 51232288.

The previous prime is 192121129. The next prime is 192121151. The reversal of 192121140 is 41121291.

It is a happy number.

192121140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (192121129) and next prime (192121151).

It is a congruent number.

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, 1600950 + ... + 1601069.

It is an arithmetic number, because the mean of its divisors is an integer number (22414140).

Almost surely, 2^192121140 is an apocalyptic number.

192121140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

192121140 is an abundant number, since it is smaller than the sum of its proper divisors (345818220).

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

192121140 is a wasteful number, since it uses less digits than its factorization.

192121140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3202031 (or 3202029 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 192121140 is about 13860.7770344956. Note that the first 3 decimals coincide. The cubic root of 192121140 is about 577.0211318599.

The spelling of 192121140 in words is "one hundred ninety-two million, one hundred twenty-one thousand, one hundred forty".