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123289201 = 731568153
BaseRepresentation
bin1110101100100…
…11111001110001
322120222201222201
413112103321301
5223030223301
620122303201
73024640510
oct726237161
9276881881
10123289201
1163659002
1235357b01
131c7090b9
1412534677
15ac55201
hex7593e71

123289201 has 8 divisors (see below), whose sum is σ = 145447424. Its totient is φ = 102267360.

The previous prime is 123289181. The next prime is 123289207. The reversal of 123289201 is 102982321.

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

It is a cyclic number.

It is not a de Polignac number, because 123289201 - 25 = 123289169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123289201.

It is not an unprimeable number, because it can be changed into a prime (123289207) 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, 283860 + ... + 284293.

It is an arithmetic number, because the mean of its divisors is an integer number (18180928).

Almost surely, 2123289201 is an apocalyptic number.

It is an amenable number.

123289201 is a deficient number, since it is larger than the sum of its proper divisors (22158223).

123289201 is an equidigital number, since it uses as much as digits as its factorization.

123289201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568191.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 123289201 is about 11103.5670394698. The cubic root of 123289201 is about 497.7084482928.

The spelling of 123289201 in words is "one hundred twenty-three million, two hundred eighty-nine thousand, two hundred one".

Divisors: 1 7 31 217 568153 3977071 17612743 123289201