121814 has 24 divisors (see below), whose sum is σ = 233928. Its totient is φ = 47040.

The previous prime is 121789. The next prime is 121843. The reversal of 121814 is 418121.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 121792 and 121801.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 121814.

It is an unprimeable number.

121814 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 11 ways as a sum of consecutive naturals, for example, 1022 + ... + 1134.

It is an arithmetic number, because the mean of its divisors is an integer number (9747).

2¹²¹⁸¹⁴ is an apocalyptic number.

121814 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

121814 is a deficient number, since it is larger than the sum of its proper divisors (112114).

121814 is a wasteful number, since it uses less digits than its factorization.

121814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 133 counting only the distinct ones).

The product of its digits is 64, while the sum is 17.

The square root of 121814 is about 349.0186241449. The cubic root of 121814 is about 49.5715389094.

Adding to 121814 its reverse (418121), we get a palindrome (539935).

The spelling of 121814 in words is "one hundred twenty-one thousand, eight hundred fourteen".