121875982 has 16 divisors (see below), whose sum is σ = 189271872. Its totient is φ = 58821120.

The previous prime is 121875979. The next prime is 121875983. The reversal of 121875982 is 289578121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121875983) 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, 2019 + ... + 15742.

It is an arithmetic number, because the mean of its divisors is an integer number (11829492).

Almost surely, 2^121875982 is an apocalyptic number.

121875982 is a deficient number, since it is larger than the sum of its proper divisors (67395890).

121875982 is a wasteful number, since it uses less digits than its factorization.

121875982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17883.

The product of its digits is 80640, while the sum is 43.

The square root of 121875982 is about 11039.7455586621. The cubic root of 121875982 is about 495.7994522871.

The spelling of 121875982 in words is "one hundred twenty-one million, eight hundred seventy-five thousand, nine hundred eighty-two".