121830530 has 8 divisors (see below), whose sum is σ = 219294972. Its totient is φ = 48732208.

The previous prime is 121830509. The next prime is 121830547. The reversal of 121830530 is 35038121.

It can be written as a sum of positive squares in 2 ways, for example, as 99580441 + 22250089 = 9979^2 + 4717^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 121830496 and 121830505.

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 3 ways as a sum of consecutive naturals, for example, 6091517 + ... + 6091536.

Almost surely, 2^121830530 is an apocalyptic number.

121830530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121830530 is a deficient number, since it is larger than the sum of its proper divisors (97464442).

121830530 is a wasteful number, since it uses less digits than its factorization.

121830530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12183060.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 121830530 is about 11037.6868047612. The cubic root of 121830530 is about 495.7378107225.

Adding to 121830530 its reverse (35038121), we get a palindrome (156868651).

The spelling of 121830530 in words is "one hundred twenty-one million, eight hundred thirty thousand, five hundred thirty".