Search a number
-
+
142847839191 = 32310691936631
BaseRepresentation
bin1000010100001001100…
…1010000101111010111
3111122201022102002200210
42011002121100233113
54320023021323231
6145342352540503
713214621412321
oct2050231205727
9448638362623
10142847839191
1155643976952
1223827551733
131061689bc45
146cb1946611
153ab0c5aa46
hex2142650bd7

142847839191 has 16 divisors (see below), whose sum is σ = 198930839040. Its totient is φ = 91006116960.

The previous prime is 142847839181. The next prime is 142847839229. The reversal of 142847839191 is 191938748241.

It is not a de Polignac number, because 142847839191 - 225 = 142814284759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142847839151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 894555 + ... + 1042076.

It is an arithmetic number, because the mean of its divisors is an integer number (12433177440).

Almost surely, 2142847839191 is an apocalyptic number.

142847839191 is a deficient number, since it is larger than the sum of its proper divisors (56082999849).

142847839191 is a wasteful number, since it uses less digits than its factorization.

142847839191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1937726.

The product of its digits is 3483648, while the sum is 57.

The spelling of 142847839191 in words is "one hundred forty-two billion, eight hundred forty-seven million, eight hundred thirty-nine thousand, one hundred ninety-one".

Divisors: 1 3 23 69 1069 3207 24587 73761 1936631 5809893 44542513 133627539 2070258539 6210775617 47615946397 142847839191