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1200207 = 3400069
BaseRepresentation
bin100100101000001001111
32020222101010
410211001033
5301401312
641420303
713126101
oct4450117
92228333
101200207
1174a808
1249a693
133303a8
14233571
1518a93c
hex12504f

1200207 has 4 divisors (see below), whose sum is σ = 1600280. Its totient is φ = 800136.

The previous prime is 1200191. The next prime is 1200233. The reversal of 1200207 is 7020021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7020021 = 32340007.

It is not a de Polignac number, because 1200207 - 24 = 1200191 is a prime.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200192 and 1200201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200007) 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, 200032 + ... + 200037.

It is an arithmetic number, because the mean of its divisors is an integer number (400070).

21200207 is an apocalyptic number.

1200207 is a deficient number, since it is larger than the sum of its proper divisors (400073).

1200207 is an equidigital number, since it uses as much as digits as its factorization.

1200207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400072.

The product of its (nonzero) digits is 28, while the sum is 12.

The square root of 1200207 is about 1095.5395930773. The cubic root of 1200207 is about 106.2719668537.

Adding to 1200207 its reverse (7020021), we get a palindrome (8220228).

The spelling of 1200207 in words is "one million, two hundred thousand, two hundred seven".

Divisors: 1 3 400069 1200207