Base | Representation |
---|---|
bin | 1110010101001… |
… | …00101111001000 |
3 | 22101012102110000 |
4 | 13022210233020 |
5 | 221233244144 |
6 | 15532323000 |
7 | 2656534353 |
oct | 712445710 |
9 | 271172400 |
10 | 120212424 |
11 | 61947412 |
12 | 34313460 |
13 | 1bb9c817 |
14 | 11d7329a |
15 | a848769 |
hex | 72a4bc8 |
120212424 has 80 divisors (see below), whose sum is σ = 348371100. Its totient is φ = 38683008.
The previous prime is 120212413. The next prime is 120212429. The reversal of 120212424 is 424212021.
It can be written as a sum of positive squares in 2 ways, for example, as 107122500 + 13089924 = 10350^2 + 3618^2 .
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a junction number, because it is equal to n+sod(n) for n = 120212397 and 120212406.
It is not an unprimeable number, because it can be changed into a prime (120212429) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 15594 + ... + 21990.
Almost surely, 2120212424 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 120212424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174185550).
120212424 is an abundant number, since it is smaller than the sum of its proper divisors (228158676).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
120212424 is a wasteful number, since it uses less digits than its factorization.
120212424 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6444 (or 6431 counting only the distinct ones).
The product of its (nonzero) digits is 256, while the sum is 18.
The square root of 120212424 is about 10964.1426477404. The cubic root of 120212424 is about 493.5332892059.
Adding to 120212424 its reverse (424212021), we get a palindrome (544424445).
The spelling of 120212424 in words is "one hundred twenty million, two hundred twelve thousand, four hundred twenty-four".
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