121288254 has 8 divisors (see below), whose sum is σ = 242576520. Its totient is φ = 40429416.

The previous prime is 121288253. The next prime is 121288273. The reversal of 121288254 is 452882121.

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

121288254 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121288253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10107349 + ... + 10107360.

It is an arithmetic number, because the mean of its divisors is an integer number (30322065).

Almost surely, 2^121288254 is an apocalyptic number.

121288254 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

121288254 is a wasteful number, since it uses less digits than its factorization.

121288254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20214714.

The product of its digits is 10240, while the sum is 33.

The square root of 121288254 is about 11013.0946604485. The cubic root of 121288254 is about 495.0011957935.

The spelling of 121288254 in words is "one hundred twenty-one million, two hundred eighty-eight thousand, two hundred fifty-four".