121600424 has 32 divisors (see below), whose sum is σ = 254802240. Its totient is φ = 53923200.

The previous prime is 121600411. The next prime is 121600447. The reversal of 121600424 is 424006121.

121600424 is nontrivially palindromic in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 121600396 and 121600405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13244 + ... + 20459.

It is an arithmetic number, because the mean of its divisors is an integer number (7962570).

Almost surely, 2^121600424 is an apocalyptic number.

It is an amenable number.

121600424 is an abundant number, since it is smaller than the sum of its proper divisors (133201816).

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

121600424 is a wasteful number, since it uses less digits than its factorization.

121600424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33761 (or 33757 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 121600424 is about 11027.2582267760. The cubic root of 121600424 is about 495.4255076742.

Adding to 121600424 its reverse (424006121), we get a palindrome (545606545).

The spelling of 121600424 in words is "one hundred twenty-one million, six hundred thousand, four hundred twenty-four".