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102423 = 334141
BaseRepresentation
bin11001000000010111
312012111110
4121000113
511234143
62110103
7604416
oct310027
9165443
10102423
116aa52
124b333
1337809
142947d
1520533
hex19017

102423 has 4 divisors (see below), whose sum is σ = 136568. Its totient is φ = 68280.

The previous prime is 102409. The next prime is 102433. The reversal of 102423 is 324201.

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

It is not a de Polignac number, because 102423 - 24 = 102407 is a prime.

It is a D-number.

It is a Duffinian number.

102423 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 102399 and 102408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17068 + ... + 17073.

It is an arithmetic number, because the mean of its divisors is an integer number (34142).

2102423 is an apocalyptic number.

102423 is a deficient number, since it is larger than the sum of its proper divisors (34145).

102423 is an equidigital number, since it uses as much as digits as its factorization.

102423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34144.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 102423 is about 320.0359354823. The cubic root of 102423 is about 46.7877862788.

Adding to 102423 its reverse (324201), we get a palindrome (426624).

It can be divided in two parts, 102 and 423, that added together give a palindrome (525).

The spelling of 102423 in words is "one hundred two thousand, four hundred twenty-three", and thus it is an iban number.

Divisors: 1 3 34141 102423