121304120 has 32 divisors (see below), whose sum is σ = 311925600. Its totient is φ = 41589888.

The previous prime is 121304101. The next prime is 121304123. The reversal of 121304120 is 21403121.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 121304095 and 121304104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121304123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216335 + ... + 216894.

It is an arithmetic number, because the mean of its divisors is an integer number (9747675).

Almost surely, 2^121304120 is an apocalyptic number.

121304120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121304120 is an abundant number, since it is smaller than the sum of its proper divisors (190621480).

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

121304120 is a wasteful number, since it uses less digits than its factorization.

121304120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433247 (or 433243 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 121304120 is about 11013.8149612203. The cubic root of 121304120 is about 495.0227789402.

Adding to 121304120 its reverse (21403121), we get a palindrome (142707241).

Subtracting from 121304120 its reverse (21403121), we obtain a palindrome (99900999).

The spelling of 121304120 in words is "one hundred twenty-one million, three hundred four thousand, one hundred twenty".