121776873 has 8 divisors (see below), whose sum is σ = 162521568. Its totient is φ = 81108384.

The previous prime is 121776821. The next prime is 121776877. The reversal of 121776873 is 378677121.

It is a happy number.

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

It is not a de Polignac number, because 121776873 - 2¹⁴ = 121760489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121776877) 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 7 ways as a sum of consecutive naturals, for example, 15211 + ... + 21792.

It is an arithmetic number, because the mean of its divisors is an integer number (20315196).

Almost surely, 2^121776873 is an apocalyptic number.

It is an amenable number.

121776873 is a deficient number, since it is larger than the sum of its proper divisors (40744695).

121776873 is a wasteful number, since it uses less digits than its factorization.

121776873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38103.

The product of its digits is 98784, while the sum is 42.

The square root of 121776873 is about 11035.2559100367. The cubic root of 121776873 is about 495.6650218801.

The spelling of 121776873 in words is "one hundred twenty-one million, seven hundred seventy-six thousand, eight hundred seventy-three".