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1312430142 = 231911145227
BaseRepresentation
bin100111000111010…
…0001100000111110
310101110120100200210
41032032201200332
510141440231032
6334121533250
744344320642
oct11616414076
93343510623
101312430142
11613918211
12307644226
1317bb9a9aa
14c6438c22
157a3482cc
hex4e3a183e

1312430142 has 16 divisors (see below), whose sum is σ = 2638605312. Its totient is φ = 435185880.

The previous prime is 1312430099. The next prime is 1312430159. The reversal of 1312430142 is 2410342131.

It is a congruent number.

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, 571468 + ... + 573759.

It is an arithmetic number, because the mean of its divisors is an integer number (164912832).

Almost surely, 21312430142 is an apocalyptic number.

1312430142 is an abundant number, since it is smaller than the sum of its proper divisors (1326175170).

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

1312430142 is a wasteful number, since it uses less digits than its factorization.

1312430142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145423.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1312430142 is about 36227.4777206473. The cubic root of 1312430142 is about 1094.8603595830.

Adding to 1312430142 its reverse (2410342131), we get a palindrome (3722772273).

The spelling of 1312430142 in words is "one billion, three hundred twelve million, four hundred thirty thousand, one hundred forty-two".

Divisors: 1 2 3 6 191 382 573 1146 1145227 2290454 3435681 6871362 218738357 437476714 656215071 1312430142