121306 has 8 divisors (see below), whose sum is σ = 183744. Its totient is φ = 60060.

The previous prime is 121291. The next prime is 121309. The reversal of 121306 is 603121.

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

It is a plaindrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (121309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31 + ... + 493.

It is an arithmetic number, because the mean of its divisors is an integer number (22968).

2¹²¹³⁰⁶ is an apocalyptic number.

121306 is a deficient number, since it is larger than the sum of its proper divisors (62438).

121306 is a wasteful number, since it uses less digits than its factorization.

121306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 121306 is about 348.2901089609. The cubic root of 121306 is about 49.5025336254.

Adding to 121306 its reverse (603121), we get a palindrome (724427).

The spelling of 121306 in words is "one hundred twenty-one thousand, three hundred six".