121273889 has 8 divisors (see below), whose sum is σ = 135376032. Its totient is φ = 107684640.

The previous prime is 121273883. The next prime is 121273921. The reversal of 121273889 is 988372121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121273889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121273883) 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, 127724 + ... + 128669.

It is an arithmetic number, because the mean of its divisors is an integer number (16922004).

Almost surely, 2^121273889 is an apocalyptic number.

It is an amenable number.

121273889 is a deficient number, since it is larger than the sum of its proper divisors (14102143).

121273889 is a wasteful number, since it uses less digits than its factorization.

121273889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256447.

The product of its digits is 48384, while the sum is 41.

The square root of 121273889 is about 11012.4424629598. The cubic root of 121273889 is about 494.9816528927.

The spelling of 121273889 in words is "one hundred twenty-one million, two hundred seventy-three thousand, eight hundred eighty-nine".