121242404 has 12 divisors (see below), whose sum is σ = 215770800. Its totient is φ = 59593608.

The previous prime is 121242391. The next prime is 121242409. The reversal of 121242404 is 404242121.

It is not an unprimeable number, because it can be changed into a prime (121242409) 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, 256634 + ... + 257105.

It is an arithmetic number, because the mean of its divisors is an integer number (17980900).

Almost surely, 2^121242404 is an apocalyptic number.

It is an amenable number.

121242404 is a deficient number, since it is larger than the sum of its proper divisors (94528396).

121242404 is a wasteful number, since it uses less digits than its factorization.

121242404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513802 (or 513800 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 121242404 is about 11011.0128507781. The cubic root of 121242404 is about 494.9388136459.

Adding to 121242404 its reverse (404242121), we get a palindrome (525484525).

The spelling of 121242404 in words is "one hundred twenty-one million, two hundred forty-two thousand, four hundred four".