122730192 has 120 divisors (see below), whose sum is σ = 377178984. Its totient is φ = 37020672.

The previous prime is 122730163. The next prime is 122730193. The reversal of 122730192 is 291037221.

It can be written as a sum of positive squares in 4 ways, for example, as 22810176 + 99920016 = 4776^2 + 9996^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122730193) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 98598 + ... + 99834.

Almost surely, 2^122730192 is an apocalyptic number.

122730192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122730192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188589492).

122730192 is an abundant number, since it is smaller than the sum of its proper divisors (254448792).

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

122730192 is a wasteful number, since it uses less digits than its factorization.

122730192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1317 (or 1308 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 122730192 is about 11078.3659444884. The cubic root of 122730192 is about 496.9550839471.

The spelling of 122730192 in words is "one hundred twenty-two million, seven hundred thirty thousand, one hundred ninety-two".