121455560 has 32 divisors (see below), whose sum is σ = 276575040. Its totient is φ = 47995584.

The previous prime is 121455557. The next prime is 121455577. The reversal of 121455560 is 65554121.

It is a happy number.

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, 14972 + ... + 21611.

It is an arithmetic number, because the mean of its divisors is an integer number (8642970).

Almost surely, 2^121455560 is an apocalyptic number.

121455560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121455560 is an abundant number, since it is smaller than the sum of its proper divisors (155119480).

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

121455560 is a wasteful number, since it uses less digits than its factorization.

121455560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36677 (or 36673 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 121455560 is about 11020.6878188251. The cubic root of 121455560 is about 495.2286941075.

The spelling of 121455560 in words is "one hundred twenty-one million, four hundred fifty-five thousand, five hundred sixty".