121862880 has 120 divisors (see below), whose sum is σ = 430120152. Its totient is φ = 32493312.

The previous prime is 121862879. The next prime is 121862899. The reversal of 121862880 is 88268121.

121862880 is a `hidden beast` number, since 1 + 21 + 8 + 628 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8259 + ... + 17661.

Almost surely, 2^121862880 is an apocalyptic number.

121862880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121862880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215060076).

121862880 is an abundant number, since it is smaller than the sum of its proper divisors (308257272).

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

121862880 is an equidigital number, since it uses as much as digits as its factorization.

121862880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9430 (or 9413 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The square root of 121862880 is about 11039.1521413558. The cubic root of 121862880 is about 495.7816850533.

The spelling of 121862880 in words is "one hundred twenty-one million, eight hundred sixty-two thousand, eight hundred eighty".