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143230120 = 235112101293
BaseRepresentation
bin10001000100110…
…00010010101000
3100222111211210021
420202120102220
5243131330440
622113530224
73356302345
oct1042302250
9328454707
10143230120
1173938a00
123bb73974
132389b667
14150457cc
15c89384a
hex88984a8

143230120 has 96 divisors (see below), whose sum is σ = 358956360. Its totient is φ = 51392000.

The previous prime is 143230091. The next prime is 143230123. The reversal of 143230120 is 21032341.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 141657604 + 1572516 = 11902^2 + 1254^2 .

It is a junction number, because it is equal to n+sod(n) for n = 143230094 and 143230103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143230123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 488694 + ... + 488986.

Almost surely, 2143230120 is an apocalyptic number.

143230120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 143230120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179478180).

143230120 is an abundant number, since it is smaller than the sum of its proper divisors (215726240).

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

143230120 is a wasteful number, since it uses less digits than its factorization.

143230120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427 (or 412 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 143230120 is about 11967.8786758556. The cubic root of 143230120 is about 523.2125090140.

Adding to 143230120 its reverse (21032341), we get a palindrome (164262461).

The spelling of 143230120 in words is "one hundred forty-three million, two hundred thirty thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 11 20 22 40 44 55 88 101 110 121 202 220 242 293 404 440 484 505 586 605 808 968 1010 1111 1172 1210 1465 2020 2222 2344 2420 2930 3223 4040 4444 4840 5555 5860 6446 8888 11110 11720 12221 12892 16115 22220 24442 25784 29593 32230 35453 44440 48884 59186 61105 64460 70906 97768 118372 122210 128920 141812 147965 177265 236744 244420 283624 295930 325523 354530 488840 591860 651046 709060 1183720 1302092 1418120 1627615 2604184 3255230 3580753 6510460 7161506 13020920 14323012 17903765 28646024 35807530 71615060 143230120