121885 has 8 divisors (see below), whose sum is σ = 154080. Its totient is φ = 92304.

The previous prime is 121883. The next prime is 121889. The reversal of 121885 is 588121.

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

It is a cyclic number.

It is not a de Polignac number, because 121885 - 2¹ = 121883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121883) 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, 547 + ... + 736.

It is an arithmetic number, because the mean of its divisors is an integer number (19260).

2¹²¹⁸⁸⁵ is an apocalyptic number.

It is an amenable number.

121885 is a deficient number, since it is larger than the sum of its proper divisors (32195).

121885 is a wasteful number, since it uses less digits than its factorization.

121885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307.

The product of its digits is 640, while the sum is 25.

The square root of 121885 is about 349.1203230979. The cubic root of 121885 is about 49.5811680590.

The spelling of 121885 in words is "one hundred twenty-one thousand, eight hundred eighty-five".