121203424 has 24 divisors (see below), whose sum is σ = 238918680. Its totient is φ = 60525696.

The previous prime is 121203419. The next prime is 121203431. The reversal of 121203424 is 424302121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30547 + ... + 34285.

It is an arithmetic number, because the mean of its divisors is an integer number (9954945).

Almost surely, 2^121203424 is an apocalyptic number.

It is an amenable number.

121203424 is a deficient number, since it is larger than the sum of its proper divisors (117715256).

121203424 is a wasteful number, since it uses less digits than its factorization.

121203424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4762 (or 4754 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 121203424 is about 11009.2426624178. The cubic root of 121203424 is about 494.8857662459.

Adding to 121203424 its reverse (424302121), we get a palindrome (545505545).

The spelling of 121203424 in words is "one hundred twenty-one million, two hundred three thousand, four hundred twenty-four".