121351760 has 20 divisors (see below), whose sum is σ = 282143028. Its totient is φ = 48540672.

The previous prime is 121351757. The next prime is 121351781. The reversal of 121351760 is 67153121.

It can be written as a sum of positive squares in 2 ways, for example, as 46840336 + 74511424 = 6844^2 + 8632^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 758369 + ... + 758528.

Almost surely, 2^121351760 is an apocalyptic number.

121351760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121351760 is an abundant number, since it is smaller than the sum of its proper divisors (160791268).

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

121351760 is a wasteful number, since it uses less digits than its factorization.

121351760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1516910 (or 1516904 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 121351760 is about 11015.9774872682. The cubic root of 121351760 is about 495.0875742074.

The spelling of 121351760 in words is "one hundred twenty-one million, three hundred fifty-one thousand, seven hundred sixty".