121730356 has 36 divisors (see below), whose sum is σ = 235744096. Its totient is φ = 54956880.

The previous prime is 121730327. The next prime is 121730383. The reversal of 121730356 is 653037121.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 78121 + ... + 79663.

Almost surely, 2^121730356 is an apocalyptic number.

It is an amenable number.

121730356 is a deficient number, since it is larger than the sum of its proper divisors (114013740).

121730356 is a wasteful number, since it uses less digits than its factorization.

121730356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1732 (or 1719 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 121730356 is about 11033.1480548391. The cubic root of 121730356 is about 495.6019015583.

Adding to 121730356 its reverse (653037121), we get a palindrome (774767477).

The spelling of 121730356 in words is "one hundred twenty-one million, seven hundred thirty thousand, three hundred fifty-six".