121753856 has 36 divisors (see below), whose sum is σ = 277755072. Its totient is φ = 52179456.

The previous prime is 121753837. The next prime is 121753859. The reversal of 121753856 is 658357121.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (121753859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32180 + ... + 35763.

Almost surely, 2^121753856 is an apocalyptic number.

121753856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

121753856 is an abundant number, since it is smaller than the sum of its proper divisors (156001216).

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

121753856 is an frugal number, since it uses more digits than its factorization.

121753856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67966 (or 67952 counting only the distinct ones).

The product of its digits is 50400, while the sum is 38.

The square root of 121753856 is about 11034.2129760124. The cubic root of 121753856 is about 495.6337914273.

The spelling of 121753856 in words is "one hundred twenty-one million, seven hundred fifty-three thousand, eight hundred fifty-six".