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200123 = 71123113
BaseRepresentation
bin110000110110111011
3101011111222
4300312323
522400443
64142255
71462310
oct606673
9334458
10200123
111273a0
129798b
1370121
1452d07
153e468
hex30dbb

200123 has 16 divisors (see below), whose sum is σ = 262656. Its totient is φ = 147840.

The previous prime is 200117. The next prime is 200131. The reversal of 200123 is 321002.

It is not a de Polignac number, because 200123 - 216 = 134587 is a prime.

It is a Duffinian number.

200123 is a modest number, since divided by 123 gives 2 as remainder.

It is a plaindrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 200123.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200153) 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 15 ways as a sum of consecutive naturals, for example, 1715 + ... + 1827.

It is an arithmetic number, because the mean of its divisors is an integer number (16416).

2200123 is an apocalyptic number.

200123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

200123 is a deficient number, since it is larger than the sum of its proper divisors (62533).

200123 is a wasteful number, since it uses less digits than its factorization.

200123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154.

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 200123 is about 447.3510925437. The cubic root of 200123 is about 58.4923407802.

Adding to 200123 its reverse (321002), we get a palindrome (521125).

It can be divided in two parts, 200 and 123, that added together give a palindrome (323).

The spelling of 200123 in words is "two hundred thousand, one hundred twenty-three", and thus it is an iban number.

Divisors: 1 7 11 23 77 113 161 253 791 1243 1771 2599 8701 18193 28589 200123