121544404 has 12 divisors (see below), whose sum is σ = 212786784. Its totient is φ = 60748184.

The previous prime is 121544393. The next prime is 121544411. The reversal of 121544404 is 404445121.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 10299 + ... + 18685.

It is an arithmetic number, because the mean of its divisors is an integer number (17732232).

Almost surely, 2^121544404 is an apocalyptic number.

It is an amenable number.

121544404 is a deficient number, since it is larger than the sum of its proper divisors (91242380).

121544404 is a wasteful number, since it uses less digits than its factorization.

121544404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12014 (or 12012 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 121544404 is about 11024.7178648707. The cubic root of 121544404 is about 495.3494169308.

Adding to 121544404 its reverse (404445121), we get a palindrome (525989525).

The spelling of 121544404 in words is "one hundred twenty-one million, five hundred forty-four thousand, four hundred four".