121792912 has 40 divisors (see below), whose sum is σ = 248109120. Its totient is φ = 57805440.

The previous prime is 121792901. The next prime is 121792921. The reversal of 121792912 is 219297121.

It is a happy number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49962 + ... + 52342.

It is an arithmetic number, because the mean of its divisors is an integer number (6202728).

Almost surely, 2^121792912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121792912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124054560).

121792912 is an abundant number, since it is smaller than the sum of its proper divisors (126316208).

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

121792912 is a wasteful number, since it uses less digits than its factorization.

121792912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2551 (or 2545 counting only the distinct ones).

The product of its digits is 4536, while the sum is 34.

The square root of 121792912 is about 11035.9826023785. The cubic root of 121792912 is about 495.6867819568.

The spelling of 121792912 in words is "one hundred twenty-one million, seven hundred ninety-two thousand, nine hundred twelve".