121789508 has 12 divisors (see below), whose sum is σ = 222398400. Its totient is φ = 58247112.

The previous prime is 121789501. The next prime is 121789517. The reversal of 121789508 is 805987121.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (121789501) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 661808 + ... + 661991.

It is an arithmetic number, because the mean of its divisors is an integer number (18533200).

Almost surely, 2^121789508 is an apocalyptic number.

It is an amenable number.

121789508 is a deficient number, since it is larger than the sum of its proper divisors (100608892).

121789508 is a wasteful number, since it uses less digits than its factorization.

121789508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323826 (or 1323824 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 41.

The square root of 121789508 is about 11035.8283785133. The cubic root of 121789508 is about 495.6821639171.

The spelling of 121789508 in words is "one hundred twenty-one million, seven hundred eighty-nine thousand, five hundred eight".