121140560 has 40 divisors (see below), whose sum is σ = 290743296. Its totient is φ = 46892160.

The previous prime is 121140559. The next prime is 121140581. The reversal of 121140560 is 65041121.

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

It is a super-3 number, since 3×121140560³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 21944 + ... + 26903.

Almost surely, 2^121140560 is an apocalyptic number.

121140560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121140560 is an abundant number, since it is smaller than the sum of its proper divisors (169602736).

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

121140560 is a wasteful number, since it uses less digits than its factorization.

121140560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48891 (or 48885 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 121140560 is about 11006.3872365095. The cubic root of 121140560 is about 494.8001914385.

Adding to 121140560 its reverse (65041121), we get a palindrome (186181681).

The spelling of 121140560 in words is "one hundred twenty-one million, one hundred forty thousand, five hundred sixty".