121708153 has 8 divisors (see below), whose sum is σ = 139428800. Its totient is φ = 104070960.

The previous prime is 121708141. The next prime is 121708159. The reversal of 121708153 is 351807121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-121708153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121708159) 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, 17703 + ... + 23596.

It is an arithmetic number, because the mean of its divisors is an integer number (17428600).

Almost surely, 2^121708153 is an apocalyptic number.

It is an amenable number.

121708153 is a deficient number, since it is larger than the sum of its proper divisors (17720647).

121708153 is an equidigital number, since it uses as much as digits as its factorization.

121708153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41727.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 121708153 is about 11032.1418138093. The cubic root of 121708153 is about 495.5717679678.

The spelling of 121708153 in words is "one hundred twenty-one million, seven hundred eight thousand, one hundred fifty-three".