Base | Representation |
---|---|
bin | 111000111000100000… |
… | …1110000100010010010 |
3 | 102200022012212210011202 |
4 | 1301301001300202102 |
5 | 4000133233330032 |
6 | 132041205311202 |
7 | 11553060342554 |
oct | 1616101604222 |
9 | 380265783152 |
10 | 122155370642 |
11 | 47895581a78 |
12 | 1b811705502 |
13 | b6998c1006 |
14 | 5cab6c74d4 |
15 | 329e308d62 |
hex | 1c71070892 |
122155370642 has 18 divisors (see below), whose sum is σ = 186795573237. Its totient is φ = 59912424936.
The previous prime is 122155370581. The next prime is 122155370677. The reversal of 122155370642 is 246073551221.
It can be written as a sum of positive squares in 2 ways, for example, as 115871479201 + 6283891441 = 340399^2 + 79271^2 .
It is an ABA number since it can be written as A⋅BA, here for A=2, B=247139.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 122155370596 and 122155370605.
It is an unprimeable number.
It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 26194403 + ... + 26199065.
Almost surely, 2122155370642 is an apocalyptic number.
122155370642 is a deficient number, since it is larger than the sum of its proper divisors (64640202595).
122155370642 is an frugal number, since it uses more digits than its factorization.
122155370642 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 9434 (or 4718 counting only the distinct ones).
The product of its (nonzero) digits is 100800, while the sum is 38.
The spelling of 122155370642 in words is "one hundred twenty-two billion, one hundred fifty-five million, three hundred seventy thousand, six hundred forty-two".
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