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123001201 = 222155381
BaseRepresentation
bin1110101010011…
…01100101110001
322120110002221001
413111031211301
5222442014301
620112202001
73022331041
oct725154561
9276402831
10123001201
1163481694
1235239301
131c637c9b
141249b721
15abe9c01
hex754d971

123001201 has 4 divisors (see below), whose sum is σ = 123058804. Its totient is φ = 122943600.

The previous prime is 123001187. The next prime is 123001223. The reversal of 123001201 is 102100321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 102100321 = 642115901.

It can be written as a sum of positive squares in 2 ways, for example, as 103632400 + 19368801 = 10180^2 + 4401^2 .

It is a cyclic number.

It is not a de Polignac number, because 123001201 - 223 = 114612593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123001301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25470 + ... + 29911.

It is an arithmetic number, because the mean of its divisors is an integer number (30764701).

Almost surely, 2123001201 is an apocalyptic number.

It is an amenable number.

123001201 is a deficient number, since it is larger than the sum of its proper divisors (57603).

123001201 is an equidigital number, since it uses as much as digits as its factorization.

123001201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57602.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 123001201 is about 11090.5906515388. The cubic root of 123001201 is about 497.3206019668.

Adding to 123001201 its reverse (102100321), we get a palindrome (225101522).

The spelling of 123001201 in words is "one hundred twenty-three million, one thousand, two hundred one".

Divisors: 1 2221 55381 123001201