121968428 has 24 divisors (see below), whose sum is σ = 220094784. Its totient is φ = 59097600.

The previous prime is 121968409. The next prime is 121968437. The reversal of 121968428 is 824869121.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 38588 + ... + 41628.

It is an arithmetic number, because the mean of its divisors is an integer number (9170616).

Almost surely, 2^121968428 is an apocalyptic number.

It is an amenable number.

121968428 is a deficient number, since it is larger than the sum of its proper divisors (98126356).

121968428 is a wasteful number, since it uses less digits than its factorization.

121968428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3353 (or 3351 counting only the distinct ones).

The product of its digits is 55296, while the sum is 41.

The square root of 121968428 is about 11043.9317274239. The cubic root of 121968428 is about 495.9247793926.

The spelling of 121968428 in words is "one hundred twenty-one million, nine hundred sixty-eight thousand, four hundred twenty-eight".