Base | Representation |
---|---|
bin | 1110011101101… |
… | …01111001111101 |
3 | 22110022021021210 |
4 | 13032311321331 |
5 | 222030100300 |
6 | 20012315033 |
7 | 3002204433 |
oct | 716657175 |
9 | 273267253 |
10 | 121331325 |
11 | 62541025 |
12 | 34772a79 |
13 | 1c1a1bab |
14 | 12184d53 |
15 | a9ba050 |
hex | 73b5e7d |
121331325 has 48 divisors (see below), whose sum is σ = 215093376. Its totient is φ = 60192000.
The previous prime is 121331269. The next prime is 121331333. The reversal of 121331325 is 523133121.
It is not a de Polignac number, because 121331325 - 28 = 121331069 is a prime.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62875 + ... + 64775.
It is an arithmetic number, because the mean of its divisors is an integer number (4481112).
Almost surely, 2121331325 is an apocalyptic number.
121331325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
121331325 is a deficient number, since it is larger than the sum of its proper divisors (93762051).
121331325 is a wasteful number, since it uses less digits than its factorization.
121331325 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1974 (or 1969 counting only the distinct ones).
The product of its digits is 540, while the sum is 21.
The square root of 121331325 is about 11015.0499317979. The cubic root of 121331325 is about 495.0597825970.
Adding to 121331325 its reverse (523133121), we get a palindrome (644464446).
The spelling of 121331325 in words is "one hundred twenty-one million, three hundred thirty-one thousand, three hundred twenty-five".
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