121752560 has 40 divisors (see below), whose sum is σ = 289106496. Its totient is φ = 47663360.

The previous prime is 121752559. The next prime is 121752581. The reversal of 121752560 is 65257121.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12431 + ... + 19950.

Almost surely, 2^121752560 is an apocalyptic number.

121752560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121752560 is an abundant number, since it is smaller than the sum of its proper divisors (167353936).

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

121752560 is a wasteful number, since it uses less digits than its factorization.

121752560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32441 (or 32435 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 121752560 is about 11034.1542494203. The cubic root of 121752560 is about 495.6320328419.

The spelling of 121752560 in words is "one hundred twenty-one million, seven hundred fifty-two thousand, five hundred sixty".