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142933 = 722917
BaseRepresentation
bin100010111001010101
321021001211
4202321111
514033213
63021421
71133500
oct427125
9237054
10142933
119842a
126a871
135009b
143a137
152c53d
hex22e55

142933 has 6 divisors (see below), whose sum is σ = 166326. Its totient is φ = 122472.

The previous prime is 142907. The next prime is 142939. The reversal of 142933 is 339241.

142933 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 142884 + 49 = 378^2 + 7^2 .

It is not a de Polignac number, because 142933 - 29 = 142421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142939) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1410 + ... + 1507.

It is an arithmetic number, because the mean of its divisors is an integer number (27721).

2142933 is an apocalyptic number.

It is an amenable number.

142933 is a deficient number, since it is larger than the sum of its proper divisors (23393).

142933 is an equidigital number, since it uses as much as digits as its factorization.

142933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2931 (or 2924 counting only the distinct ones).

The product of its digits is 648, while the sum is 22.

The square root of 142933 is about 378.0648092589. The cubic root of 142933 is about 52.2850470361.

The spelling of 142933 in words is "one hundred forty-two thousand, nine hundred thirty-three".

Divisors: 1 7 49 2917 20419 142933