121755460 has 24 divisors (see below), whose sum is σ = 256072320. Its totient is φ = 48628704.

The previous prime is 121755457. The next prime is 121755463. The reversal of 121755460 is 64557121.

It is an interprime number because it is at equal distance from previous prime (121755457) and next prime (121755463).

It is not an unprimeable number, because it can be changed into a prime (121755463) by changing a digit.

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, 10147 + ... + 18613.

It is an arithmetic number, because the mean of its divisors is an integer number (10669680).

Almost surely, 2^121755460 is an apocalyptic number.

121755460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121755460 is an abundant number, since it is smaller than the sum of its proper divisors (134316860).

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

121755460 is a wasteful number, since it uses less digits than its factorization.

121755460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9195 (or 9193 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 121755460 is about 11034.2856588000. The cubic root of 121755460 is about 495.6359679309.

The spelling of 121755460 in words is "one hundred twenty-one million, seven hundred fifty-five thousand, four hundred sixty".