121877 has 8 divisors (see below), whose sum is σ = 145536. Its totient is φ = 99792.

The previous prime is 121867. The next prime is 121883. The reversal of 121877 is 778121.

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

It is not a de Polignac number, because 121877 - 2⁸ = 121621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121867) 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, 218 + ... + 539.

It is an arithmetic number, because the mean of its divisors is an integer number (18192).

2¹²¹⁸⁷⁷ is an apocalyptic number.

It is an amenable number.

121877 is a deficient number, since it is larger than the sum of its proper divisors (23659).

121877 is an equidigital number, since it uses as much as digits as its factorization.

121877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787.

The product of its digits is 784, while the sum is 26.

The square root of 121877 is about 349.1088655420. The cubic root of 121877 is about 49.5800832713.

Adding to 121877 its reverse (778121), we get a palindrome (899998).

The spelling of 121877 in words is "one hundred twenty-one thousand, eight hundred seventy-seven".