121394560 has 160 divisors (see below), whose sum is σ = 342842400. Its totient is φ = 41094144.

The previous prime is 121394557. The next prime is 121394573. The reversal of 121394560 is 65493121.

It is a tau number, because it is divible by the number of its divisors (160).

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, 1536601 + ... + 1536679.

It is an arithmetic number, because the mean of its divisors is an integer number (2142765).

Almost surely, 2^121394560 is an apocalyptic number.

121394560 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 121394560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171421200).

121394560 is an abundant number, since it is smaller than the sum of its proper divisors (221447840).

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

121394560 is an frugal number, since it uses more digits than its factorization.

121394560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 121394560 is about 11017.9199488833. The cubic root of 121394560 is about 495.1457721204.

The spelling of 121394560 in words is "one hundred twenty-one million, three hundred ninety-four thousand, five hundred sixty".