121853928 has 32 divisors (see below), whose sum is σ = 348154560. Its totient is φ = 34815360.

The previous prime is 121853923. The next prime is 121853929. The reversal of 121853928 is 829358121.

It is not an unprimeable number, because it can be changed into a prime (121853923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 362493 + ... + 362828.

It is an arithmetic number, because the mean of its divisors is an integer number (10879830).

Almost surely, 2^121853928 is an apocalyptic number.

It is an amenable number.

121853928 is an abundant number, since it is smaller than the sum of its proper divisors (226300632).

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

121853928 is a wasteful number, since it uses less digits than its factorization.

121853928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725337 (or 725333 counting only the distinct ones).

The product of its digits is 34560, while the sum is 39.

The square root of 121853928 is about 11038.7466679873. The cubic root of 121853928 is about 495.7695447791.

The spelling of 121853928 in words is "one hundred twenty-one million, eight hundred fifty-three thousand, nine hundred twenty-eight".