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243130102420 = 225194787133657
BaseRepresentation
bin1110001001101110101…
…1101111001010010100
3212020120011011220022011
43202123223233022110
512440412301234140
6303405321514004
723364663525562
oct3423353571224
9766504156264
10243130102420
1194124671547
123b153942904
1319c08a0923a
14baa6280a32
1564ceb4dcea
hex389baef294

243130102420 has 48 divisors (see below), whose sum is σ = 537561783360. Its totient is φ = 92113576704.

The previous prime is 243130102409. The next prime is 243130102471. The reversal of 243130102420 is 24201031342.

243130102420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2431301024202 (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243130102391 and 243130102400.

It is a congruent number.

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, 1752232 + ... + 1885888.

It is an arithmetic number, because the mean of its divisors is an integer number (11199203820).

Almost surely, 2243130102420 is an apocalyptic number.

243130102420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243130102420 is an abundant number, since it is smaller than the sum of its proper divisors (294431680940).

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

243130102420 is a wasteful number, since it uses less digits than its factorization.

243130102420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138472 (or 138470 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 243130102420 its reverse (24201031342), we get a palindrome (267331133762).

The spelling of 243130102420 in words is "two hundred forty-three billion, one hundred thirty million, one hundred two thousand, four hundred twenty".

Divisors: 1 2 4 5 10 19 20 38 76 95 190 380 4787 9574 19148 23935 47870 90953 95740 133657 181906 267314 363812 454765 534628 668285 909530 1336570 1819060 2539483 2673140 5078966 10157932 12697415 25394830 50789660 639816059 1279632118 2559264236 3199080295 6398160590 12156505121 12796321180 24313010242 48626020484 60782525605 121565051210 243130102420