121723760 has 20 divisors (see below), whose sum is σ = 283007928. Its totient is φ = 48689472.

The previous prime is 121723729. The next prime is 121723769. The reversal of 121723760 is 67327121.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121723769) 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, 760694 + ... + 760853.

Almost surely, 2^121723760 is an apocalyptic number.

121723760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121723760 is an abundant number, since it is smaller than the sum of its proper divisors (161284168).

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

121723760 is a wasteful number, since it uses less digits than its factorization.

121723760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1521560 (or 1521554 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 121723760 is about 11032.8491333835. The cubic root of 121723760 is about 495.5929499451.

The spelling of 121723760 in words is "one hundred twenty-one million, seven hundred twenty-three thousand, seven hundred sixty".