Base | Representation |
---|---|
bin | 1110100101010… |
… | …00011111110101 |
3 | 22112011202022212 |
4 | 13102220133311 |
5 | 222303344411 |
6 | 20045503205 |
7 | 3013513412 |
oct | 722503765 |
9 | 275152285 |
10 | 122324981 |
11 | 6305a629 |
12 | 34b71b05 |
13 | 1c45c25c |
14 | 12363109 |
15 | ab1468b |
hex | 74a87f5 |
122324981 has 4 divisors (see below), whose sum is σ = 125169792. Its totient is φ = 119480172.
The previous prime is 122324957. The next prime is 122325001. The reversal of 122324981 is 189423221.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 189423221 = 13 ⋅14571017.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-122324981 is a prime.
It is a super-2 number, since 2×1223249812 = 29926801953300722, 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 (122324941) 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, 1422341 + ... + 1422426.
It is an arithmetic number, because the mean of its divisors is an integer number (31292448).
Almost surely, 2122324981 is an apocalyptic number.
It is an amenable number.
122324981 is a deficient number, since it is larger than the sum of its proper divisors (2844811).
122324981 is an equidigital number, since it uses as much as digits as its factorization.
122324981 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2844810.
The product of its digits is 6912, while the sum is 32.
The square root of 122324981 is about 11060.0624320119. The cubic root of 122324981 is about 496.4075585458.
The spelling of 122324981 in words is "one hundred twenty-two million, three hundred twenty-four thousand, nine hundred eighty-one".
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