121965873 has 16 divisors (see below), whose sum is σ = 168271872. Its totient is φ = 78498000.

The previous prime is 121965863. The next prime is 121965889. The reversal of 121965873 is 378569121.

It is not a de Polignac number, because 121965873 - 2⁵ = 121965841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121965853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44328 + ... + 46998.

It is an arithmetic number, because the mean of its divisors is an integer number (10516992).

Almost surely, 2^121965873 is an apocalyptic number.

It is an amenable number.

121965873 is a deficient number, since it is larger than the sum of its proper divisors (46305999).

121965873 is a wasteful number, since it uses less digits than its factorization.

121965873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3196.

The product of its digits is 90720, while the sum is 42.

The square root of 121965873 is about 11043.8160524340. The cubic root of 121965873 is about 495.9213164837.

The spelling of 121965873 in words is "one hundred twenty-one million, nine hundred sixty-five thousand, eight hundred seventy-three".