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142830512 = 24111037879
BaseRepresentation
bin10001000001101…
…10101110110000
3100221202112121222
420200312232300
5243031034022
622101204212
73353016326
oct1040665660
9327675558
10142830512
1173695750
123ba00668
132378b7c6
1414d7dd16
15c815242
hex8836bb0

142830512 has 40 divisors (see below), whose sum is σ = 304861440. Its totient is φ = 64284480.

The previous prime is 142830491. The next prime is 142830551. The reversal of 142830512 is 215038241.

It is a super-3 number, since 3×1428305123 (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14189 + ... + 22067.

It is an arithmetic number, because the mean of its divisors is an integer number (7621536).

Almost surely, 2142830512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142830512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152430720).

142830512 is an abundant number, since it is smaller than the sum of its proper divisors (162030928).

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

142830512 is a wasteful number, since it uses less digits than its factorization.

142830512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8001 (or 7995 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 142830512 is about 11951.1719927378. The cubic root of 142830512 is about 522.7254730735.

Adding to 142830512 its reverse (215038241), we get a palindrome (357868753).

The spelling of 142830512 in words is "one hundred forty-two million, eight hundred thirty thousand, five hundred twelve".

Divisors: 1 2 4 8 11 16 22 44 88 103 176 206 412 824 1133 1648 2266 4532 7879 9064 15758 18128 31516 63032 86669 126064 173338 346676 693352 811537 1386704 1623074 3246148 6492296 8926907 12984592 17853814 35707628 71415256 142830512