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2069143 = 11318311
BaseRepresentation
bin111111001001010010111
310220010022221
413321022113
51012203033
6112203211
723405326
oct7711227
93803287
102069143
11119363a
12839507
13575a5b
143bc0bd
152ad12d
hex1f9297

2069143 has 4 divisors (see below), whose sum is σ = 2087568. Its totient is φ = 2050720.

The previous prime is 2069141. The next prime is 2069183. The reversal of 2069143 is 3419602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2069143 - 21 = 2069141 is a prime.

It is a Duffinian number.

2069143 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2069141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9043 + ... + 9268.

It is an arithmetic number, because the mean of its divisors is an integer number (521892).

22069143 is an apocalyptic number.

2069143 is a deficient number, since it is larger than the sum of its proper divisors (18425).

2069143 is a wasteful number, since it uses less digits than its factorization.

2069143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18424.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 2069143 is about 1438.4515980734. The cubic root of 2069143 is about 127.4275995465.

The spelling of 2069143 in words is "two million, sixty-nine thousand, one hundred forty-three".

Divisors: 1 113 18311 2069143