121872568 has 8 divisors (see below), whose sum is σ = 228511080. Its totient is φ = 60936280.

The previous prime is 121872547. The next prime is 121872581. The reversal of 121872568 is 865278121.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 121872568.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7617028 + ... + 7617043.

It is an arithmetic number, because the mean of its divisors is an integer number (28563885).

Almost surely, 2^121872568 is an apocalyptic number.

It is an amenable number.

121872568 is a deficient number, since it is larger than the sum of its proper divisors (106638512).

121872568 is a wasteful number, since it uses less digits than its factorization.

121872568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15234077 (or 15234073 counting only the distinct ones).

The product of its digits is 53760, while the sum is 40.

The square root of 121872568 is about 11039.5909344504. The cubic root of 121872568 is about 495.7948227856.

The spelling of 121872568 in words is "one hundred twenty-one million, eight hundred seventy-two thousand, five hundred sixty-eight".