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123081 = 375861
BaseRepresentation
bin11110000011001001
320020211120
4132003021
512414311
62345453
71021560
oct360311
9206746
10123081
1184522
125b289
134403a
1432bd7
1526706
hex1e0c9

123081 has 8 divisors (see below), whose sum is σ = 187584. Its totient is φ = 70320.

The previous prime is 123077. The next prime is 123083. The reversal of 123081 is 180321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123081 - 22 = 123077 is a prime.

It is a super-2 number, since 2×1230812 = 30297865122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123081.

It is not an unprimeable number, because it can be changed into a prime (123083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2910 + ... + 2951.

It is an arithmetic number, because the mean of its divisors is an integer number (23448).

2123081 is an apocalyptic number.

It is an amenable number.

123081 is a deficient number, since it is larger than the sum of its proper divisors (64503).

123081 is an equidigital number, since it uses as much as digits as its factorization.

123081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5871.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 123081 is about 350.8290181841. The cubic root of 123081 is about 49.7428126954.

The spelling of 123081 in words is "one hundred twenty-three thousand, eighty-one".

Divisors: 1 3 7 21 5861 17583 41027 123081