121841560 has 16 divisors (see below), whose sum is σ = 274143600. Its totient is φ = 48736608.

The previous prime is 121841543. The next prime is 121841561. The reversal of 121841560 is 65148121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121841561) 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 3 ways as a sum of consecutive naturals, for example, 1522980 + ... + 1523059.

It is an arithmetic number, because the mean of its divisors is an integer number (17133975).

Almost surely, 2^121841560 is an apocalyptic number.

121841560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121841560 is an abundant number, since it is smaller than the sum of its proper divisors (152302040).

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

121841560 is a wasteful number, since it uses less digits than its factorization.

121841560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3046050 (or 3046046 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 121841560 is about 11038.1864452454. The cubic root of 121841560 is about 495.7527709109.

Adding to 121841560 its reverse (65148121), we get a palindrome (186989681).

It can be divided in two parts, 1218 and 41560, that added together give a triangular number (42778 = T₂₉₂).

The spelling of 121841560 in words is "one hundred twenty-one million, eight hundred forty-one thousand, five hundred sixty".