121723568 has 20 divisors (see below), whose sum is σ = 236011680. Its totient is φ = 60817344.

The previous prime is 121723507. The next prime is 121723603. The reversal of 121723568 is 865327121.

It is a happy 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, 37598 + ... + 40706.

It is an arithmetic number, because the mean of its divisors is an integer number (11800584).

Almost surely, 2^121723568 is an apocalyptic number.

It is an amenable number.

121723568 is a deficient number, since it is larger than the sum of its proper divisors (114288112).

121723568 is a wasteful number, since it uses less digits than its factorization.

121723568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5564 (or 5558 counting only the distinct ones).

The product of its digits is 20160, while the sum is 35.

The square root of 121723568 is about 11032.8404320918. The cubic root of 121723568 is about 495.5926893718.

The spelling of 121723568 in words is "one hundred twenty-one million, seven hundred twenty-three thousand, five hundred sixty-eight".