121503404 has 48 divisors (see below), whose sum is σ = 246758400. Its totient is φ = 51768000.

The previous prime is 121503397. The next prime is 121503407. The reversal of 121503404 is 404305121.

It is not an unprimeable number, because it can be changed into a prime (121503407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83717 + ... + 85155.

It is an arithmetic number, because the mean of its divisors is an integer number (5140800).

Almost surely, 2^121503404 is an apocalyptic number.

It is an amenable number.

121503404 is an abundant number, since it is smaller than the sum of its proper divisors (125254996).

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

121503404 is a wasteful number, since it uses less digits than its factorization.

121503404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1574 (or 1572 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 121503404 is about 11022.8582500185. The cubic root of 121503404 is about 495.2937127068.

Adding to 121503404 its reverse (404305121), we get a palindrome (525808525).

The spelling of 121503404 in words is "one hundred twenty-one million, five hundred three thousand, four hundred four".