121402304 has 56 divisors (see below), whose sum is σ = 256690368. Its totient is φ = 56770560.

The previous prime is 121402301. The next prime is 121402331. The reversal of 121402304 is 403204121.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121402301) 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, 261977 + ... + 262439.

Almost surely, 2^121402304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121402304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128345184).

121402304 is an abundant number, since it is smaller than the sum of its proper divisors (135288064).

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

121402304 is a wasteful number, since it uses less digits than its factorization.

121402304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733 (or 723 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 121402304 is about 11018.2713707732. The cubic root of 121402304 is about 495.1563006738.

Adding to 121402304 its reverse (403204121), we get a palindrome (524606425).

The spelling of 121402304 in words is "one hundred twenty-one million, four hundred two thousand, three hundred four".