Base | Representation |
---|---|
bin | 1110010101011… |
… | …10111100001101 |
3 | 22101021112210001 |
4 | 13022232330031 |
5 | 221241113341 |
6 | 15533244301 |
7 | 2660100253 |
oct | 712567415 |
9 | 271245701 |
10 | 120254221 |
11 | 6197585a |
12 | 34333691 |
13 | 1bbb5859 |
14 | 11d845d3 |
15 | a855d31 |
hex | 72aef0d |
120254221 has 4 divisors (see below), whose sum is σ = 120304444. Its totient is φ = 120204000.
The previous prime is 120254207. The next prime is 120254263. The reversal of 120254221 is 122452021.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in 2 ways, for example, as 16112196 + 104142025 = 4014^2 + 10205^2 .
It is a cyclic number.
It is not a de Polignac number, because 120254221 - 27 = 120254093 is a prime.
It is a super-2 number, since 2×1202542212 = 28922155336633682, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (120234221) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21330 + ... + 26371.
It is an arithmetic number, because the mean of its divisors is an integer number (30076111).
Almost surely, 2120254221 is an apocalyptic number.
It is an amenable number.
120254221 is a deficient number, since it is larger than the sum of its proper divisors (50223).
120254221 is an equidigital number, since it uses as much as digits as its factorization.
120254221 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 50222.
The product of its (nonzero) digits is 320, while the sum is 19.
The square root of 120254221 is about 10966.0485590754. The cubic root of 120254221 is about 493.5904819095.
The spelling of 120254221 in words is "one hundred twenty million, two hundred fifty-four thousand, two hundred twenty-one".
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