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143469 = 3219839
BaseRepresentation
bin100011000001101101
321021210200
4203001231
514042334
63024113
71135164
oct430155
9237720
10143469
1198877
126b039
13503c1
143a3db
152c799
hex2306d

143469 has 12 divisors (see below), whose sum is σ = 218400. Its totient is φ = 90504.

The previous prime is 143467. The next prime is 143477. The reversal of 143469 is 964341.

It is not a de Polignac number, because 143469 - 21 = 143467 is a prime.

It is a super-2 number, since 2×1434692 = 41166707922, which contains 22 as substring.

Its product of digits (2592) is a multiple of the sum of its prime factors (864).

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 249 + ... + 590.

It is an arithmetic number, because the mean of its divisors is an integer number (18200).

2143469 is an apocalyptic number.

143469 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

143469 is a deficient number, since it is larger than the sum of its proper divisors (74931).

143469 is a wasteful number, since it uses less digits than its factorization.

143469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864 (or 861 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 143469 is about 378.7730191025. The cubic root of 143469 is about 52.3503219713.

The spelling of 143469 in words is "one hundred forty-three thousand, four hundred sixty-nine".

Divisors: 1 3 9 19 57 171 839 2517 7551 15941 47823 143469