121790160 has 240 divisors, whose sum is σ = 431758080. Its totient is φ = 30735360.

The previous prime is 121790153. The next prime is 121790161. The reversal of 121790160 is 61097121.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121790161) 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 47 ways as a sum of consecutive naturals, for example, 1996530 + ... + 1996590.

It is an arithmetic number, because the mean of its divisors is an integer number (1798992).

Almost surely, 2^121790160 is an apocalyptic number.

121790160 is a gapful number since it is divisible by the number (10) 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 121790160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215879040).

121790160 is an abundant number, since it is smaller than the sum of its proper divisors (309967920).

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

121790160 is a wasteful number, since it uses less digits than its factorization.

121790160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 27.

The square root of 121790160 is about 11035.8579186215. The cubic root of 121790160 is about 495.6830484602.

The spelling of 121790160 in words is "one hundred twenty-one million, seven hundred ninety thousand, one hundred sixty".