121340 has 12 divisors (see below), whose sum is σ = 254856. Its totient is φ = 48528.

The previous prime is 121333. The next prime is 121343. The reversal of 121340 is 43121.

It is a happy number.

121340 is nontrivially palindromic in base 9.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121343) by changing a digit.

121340 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3014 + ... + 3053.

It is an arithmetic number, because the mean of its divisors is an integer number (21238).

2¹²¹³⁴⁰ is an apocalyptic number.

121340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121340 is an abundant number, since it is smaller than the sum of its proper divisors (133516).

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

121340 is a wasteful number, since it uses less digits than its factorization.

121340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6076 (or 6074 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 121340 is about 348.3389154258. The cubic root of 121340 is about 49.5071580983.

Adding to 121340 its reverse (43121), we get a palindrome (164461).

The spelling of 121340 in words is "one hundred twenty-one thousand, three hundred forty", and thus it is an iban number.