121453 has 2 divisors, whose sum is σ = 121454. Its totient is φ = 121452.
The previous prime is 121447. The next prime is 121469. The reversal of 121453 is 354121.
It is an a-pointer prime, because the next prime (121469) can be obtained adding 121453 to its sum of digits (16).
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 116964 + 4489 = 342^2 + 67^2 .
It is an emirp because it is prime and its reverse (354121) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 121453 - 25 = 121421 is a prime.
It is the 349-th Hogben number.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (121403) by changing a digit.
It is a nontrivial repunit in base 348.
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 as a sum of consecutive naturals, namely, 60726 + 60727.
It is an arithmetic number, because the mean of its divisors is an integer number (60727).
2121453 is an apocalyptic number.
It is an amenable number.
121453 is a deficient number, since it is larger than the sum of its proper divisors (1).
121453 is an equidigital number, since it uses as much as digits as its factorization.
121453 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 120, while the sum is 16.
The square root of 121453 is about 348.5010760385. The cubic root of 121453 is about 49.5225214661.
Adding to 121453 its reverse (354121), we get a palindrome (475574).
The spelling of 121453 in words is "one hundred twenty-one thousand, four hundred fifty-three".
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