121430288 has 40 divisors (see below), whose sum is σ = 271030272. Its totient is φ = 51625728.

The previous prime is 121430249. The next prime is 121430291. The reversal of 121430288 is 882034121.

It is a self number, because there is not a number n which added to its sum of digits gives 121430288.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9956 + ... + 18492.

Almost surely, 2^121430288 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 121430288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135515136).

121430288 is an abundant number, since it is smaller than the sum of its proper divisors (149599984).

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

121430288 is a wasteful number, since it uses less digits than its factorization.

121430288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8679 (or 8673 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 121430288 is about 11019.5411882710. The cubic root of 121430288 is about 495.1943433054.

The spelling of 121430288 in words is "one hundred twenty-one million, four hundred thirty thousand, two hundred eighty-eight".