121860560 has 40 divisors (see below), whose sum is σ = 283910400. Its totient is φ = 48643712.

The previous prime is 121860559. The next prime is 121860577. The reversal of 121860560 is 65068121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46649 + ... + 49191.

It is an arithmetic number, because the mean of its divisors is an integer number (7097760).

Almost surely, 2^121860560 is an apocalyptic number.

121860560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121860560 is an abundant number, since it is smaller than the sum of its proper divisors (162049840).

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

121860560 is a wasteful number, since it uses less digits than its factorization.

121860560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3155 (or 3149 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 121860560 is about 11039.0470603218. The cubic root of 121860560 is about 495.7785388374.

The spelling of 121860560 in words is "one hundred twenty-one million, eight hundred sixty thousand, five hundred sixty".