121443204 has 24 divisors (see below), whose sum is σ = 284025280. Its totient is φ = 40387104.

The previous prime is 121443199. The next prime is 121443209. The reversal of 121443204 is 402344121.

It is an interprime number because it is at equal distance from previous prime (121443199) and next prime (121443209).

It is not an unprimeable number, because it can be changed into a prime (121443209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6259 + ... + 16794.

Almost surely, 2^121443204 is an apocalyptic number.

It is an amenable number.

121443204 is an abundant number, since it is smaller than the sum of its proper divisors (162582076).

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

121443204 is a wasteful number, since it uses less digits than its factorization.

121443204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23499 (or 23497 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 121443204 is about 11020.1272224961. The cubic root of 121443204 is about 495.2118998900.

Adding to 121443204 its reverse (402344121), we get a palindrome (523787325).

The spelling of 121443204 in words is "one hundred twenty-one million, four hundred forty-three thousand, two hundred four".