Search a number
-
+
123110401230020 = 22519919352529641
BaseRepresentation
bin11011111111011111011111…
…101110111100010011000100
3121010220020110112102212212202
4123333133133232330103010
5112114020100203330040
61113500045413534032
734634301336335441
oct3377373756742304
9533806415385782
10123110401230020
1136254912016056
1211983754344318
135390351608b89
14225880a5509c8
15e375b62ea015
hex6ff7dfbbc4c4

123110401230020 has 48 divisors (see below), whose sum is σ = 272434907337600. Its totient is φ = 46601598170880.

The previous prime is 123110401229969. The next prime is 123110401230053. The reversal of 123110401230020 is 20032104011321.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 123110401229974 and 123110401230001.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175915601 + ... + 176614040.

It is an arithmetic number, because the mean of its divisors is an integer number (5675727236200).

Almost surely, 2123110401230020 is an apocalyptic number.

123110401230020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123110401230020 is an abundant number, since it is smaller than the sum of its proper divisors (149324506107580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123110401230020 is a wasteful number, since it uses less digits than its factorization.

123110401230020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352530588 (or 352530586 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 123110401230020 its reverse (20032104011321), we get a palindrome (143142505241341).

The spelling of 123110401230020 in words is "one hundred twenty-three trillion, one hundred ten billion, four hundred one million, two hundred thirty thousand, twenty".

Divisors: 1 2 4 5 10 19 20 38 76 95 190 380 919 1838 3676 4595 9190 17461 18380 34922 69844 87305 174610 349220 352529641 705059282 1410118564 1762648205 3525296410 6698063179 7050592820 13396126358 26792252716 33490315895 66980631790 133961263580 323974740079 647949480158 1295898960316 1619873700395 3239747400790 6155520061501 6479494801580 12311040123002 24622080246004 30777600307505 61555200615010 123110401230020