121355040 has 48 divisors (see below), whose sum is σ = 382269888. Its totient is φ = 32361216.

The previous prime is 121355029. The next prime is 121355063. The reversal of 121355040 is 40553121.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 121354998 and 121355016.

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, 125932 + ... + 126891.

It is an arithmetic number, because the mean of its divisors is an integer number (7963956).

Almost surely, 2^121355040 is an apocalyptic number.

121355040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121355040 is an abundant number, since it is smaller than the sum of its proper divisors (260914848).

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

121355040 is a wasteful number, since it uses less digits than its factorization.

121355040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252841 (or 252833 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 121355040 is about 11016.1263609311. The cubic root of 121355040 is about 495.0920347185.

The spelling of 121355040 in words is "one hundred twenty-one million, three hundred fifty-five thousand, forty".