121875845 has 32 divisors (see below), whose sum is σ = 180837888. Its totient is φ = 76785408.

The previous prime is 121875829. The next prime is 121875847. The reversal of 121875845 is 548578121.

It is not a de Polignac number, because 121875845 - 2⁴ = 121875829 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121875847) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 125552 + ... + 126518.

It is an arithmetic number, because the mean of its divisors is an integer number (5651184).

Almost surely, 2^121875845 is an apocalyptic number.

It is an amenable number.

121875845 is a deficient number, since it is larger than the sum of its proper divisors (58962043).

121875845 is a wasteful number, since it uses less digits than its factorization.

121875845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269.

The product of its digits is 89600, while the sum is 41.

The square root of 121875845 is about 11039.7393538072. The cubic root of 121875845 is about 495.7992665121.

The spelling of 121875845 in words is "one hundred twenty-one million, eight hundred seventy-five thousand, eight hundred forty-five".