121938 has 8 divisors (see below), whose sum is σ = 243888. Its totient is φ = 40644.

The previous prime is 121937. The next prime is 121949. The reversal of 121938 is 839121.

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

121938 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (121931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10156 + ... + 10167.

It is an arithmetic number, because the mean of its divisors is an integer number (30486).

2¹²¹⁹³⁸ is an apocalyptic number.

121938 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121938 is a wasteful number, since it uses less digits than its factorization.

121938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20328.

The product of its digits is 432, while the sum is 24.

The square root of 121938 is about 349.1962199108. The cubic root of 121938 is about 49.5883535784.

The spelling of 121938 in words is "one hundred twenty-one thousand, nine hundred thirty-eight".