121404104 has 16 divisors (see below), whose sum is σ = 233785500. Its totient is φ = 59061312.

The previous prime is 121404103. The next prime is 121404131. The reversal of 121404104 is 401404121.

Added to its reverse (401404121) it gives a square (522808225 = 22865²).

It can be written as a sum of positive squares in 2 ways, for example, as 118156900 + 3247204 = 10870^2 + 1802^2 .

It is not an unprimeable number, because it can be changed into a prime (121404103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204779 + ... + 205370.

Almost surely, 2^121404104 is an apocalyptic number.

It is an amenable number.

121404104 is a deficient number, since it is larger than the sum of its proper divisors (112381396).

121404104 is a wasteful number, since it uses less digits than its factorization.

121404104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410192 (or 410188 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 121404104 is about 11018.3530529748. The cubic root of 121404104 is about 495.1587478457.

Adding to 121404104 its sum of digits (17), we get a palindrome (121404121).

Adding to 121404104 its reverse (401404121), we get a palindrome (522808225).

The spelling of 121404104 in words is "one hundred twenty-one million, four hundred four thousand, one hundred four".