121870359 has 16 divisors (see below), whose sum is σ = 194437600. Its totient is φ = 74996928.

The previous prime is 121870339. The next prime is 121870367. The reversal of 121870359 is 953078121.

It is not a de Polignac number, because 121870359 - 2¹⁵ = 121837591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121870319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173254 + ... + 173955.

It is an arithmetic number, because the mean of its divisors is an integer number (12152350).

Almost surely, 2^121870359 is an apocalyptic number.

121870359 is a deficient number, since it is larger than the sum of its proper divisors (72567241).

121870359 is a wasteful number, since it uses less digits than its factorization.

121870359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347231 (or 347225 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 121870359 is about 11039.4908850001. The cubic root of 121870359 is about 495.7918272595.

The spelling of 121870359 in words is "one hundred twenty-one million, eight hundred seventy thousand, three hundred fifty-nine".