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123143264 = 25127157193
BaseRepresentation
bin1110101011100…
…00010001100000
322120201022210122
413111300101200
5223011041024
620115215412
73023462156
oct725602140
9276638718
10123143264
11635693a2
12352a7568
131c68784a
14124d73d6
15ac26d5e
hex7570460

123143264 has 48 divisors (see below), whose sum is σ = 247177728. Its totient is φ = 60383232.

The previous prime is 123143263. The next prime is 123143281. The reversal of 123143264 is 462341321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123143261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 637952 + ... + 638144.

It is an arithmetic number, because the mean of its divisors is an integer number (5149536).

Almost surely, 2123143264 is an apocalyptic number.

It is an amenable number.

123143264 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

123143264 is a wasteful number, since it uses less digits than its factorization.

123143264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487 (or 479 counting only the distinct ones).

The product of its digits is 3456, while the sum is 26.

The square root of 123143264 is about 11096.9934667008. The cubic root of 123143264 is about 497.5119921690.

Adding to 123143264 its reverse (462341321), we get a palindrome (585484585).

The spelling of 123143264 in words is "one hundred twenty-three million, one hundred forty-three thousand, two hundred sixty-four".

Divisors: 1 2 4 8 16 32 127 157 193 254 314 386 508 628 772 1016 1256 1544 2032 2512 3088 4064 5024 6176 19939 24511 30301 39878 49022 60602 79756 98044 121204 159512 196088 242408 319024 392176 484816 638048 784352 969632 3848227 7696454 15392908 30785816 61571632 123143264