121881459 has 8 divisors (see below), whose sum is σ = 185724160. Its totient is φ = 69646536.

The previous prime is 121881451. The next prime is 121881467. The reversal of 121881459 is 954188121.

It is an interprime number because it is at equal distance from previous prime (121881451) and next prime (121881467).

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

It is not a de Polignac number, because 121881459 - 2³ = 121881451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121881451) 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, 2901919 + ... + 2901960.

It is an arithmetic number, because the mean of its divisors is an integer number (23215520).

Almost surely, 2^121881459 is an apocalyptic number.

121881459 is a deficient number, since it is larger than the sum of its proper divisors (63842701).

121881459 is an equidigital number, since it uses as much as digits as its factorization.

121881459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5803889.

The product of its digits is 23040, while the sum is 39.

The square root of 121881459 is about 11039.9936141286. The cubic root of 121881459 is about 495.8068791071.

The spelling of 121881459 in words is "one hundred twenty-one million, eight hundred eighty-one thousand, four hundred fifty-nine".