121720059 has 12 divisors (see below), whose sum is σ = 176939776. Its totient is φ = 80628912.

The previous prime is 121720031. The next prime is 121720069. The reversal of 121720059 is 950027121.

It is not a de Polignac number, because 121720059 - 2¹⁶ = 121654523 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (121720069) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41659 + ... + 44484.

Almost surely, 2^121720059 is an apocalyptic number.

121720059 is a deficient number, since it is larger than the sum of its proper divisors (55219717).

121720059 is a wasteful number, since it uses less digits than its factorization.

121720059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86306 (or 86303 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 121720059 is about 11032.6814057146. The cubic root of 121720059 is about 495.5879270745.

The spelling of 121720059 in words is "one hundred twenty-one million, seven hundred twenty thousand, fifty-nine".