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1200241201 = 2814271321
BaseRepresentation
bin100011110001010…
…0011101000110001
310002122110120101211
41013202203220301
54424230204301
6315033200121
741512611325
oct10742435061
93078416354
101200241201
11566560a85
12295b60041
1316187a1c3
14b5593985
1570587051
hex478a3a31

1200241201 has 4 divisors (see below), whose sum is σ = 1204512804. Its totient is φ = 1195969600.

The previous prime is 1200241199. The next prime is 1200241213. The reversal of 1200241201 is 1021420021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1021420021 = 1516764371.

It can be written as a sum of positive squares in 2 ways, for example, as 948701601 + 251539600 = 30801^2 + 15860^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200241201 - 21 = 1200241199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200241901) 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, 2135380 + ... + 2135941.

It is an arithmetic number, because the mean of its divisors is an integer number (301128201).

Almost surely, 21200241201 is an apocalyptic number.

It is an amenable number.

1200241201 is a deficient number, since it is larger than the sum of its proper divisors (4271603).

1200241201 is an equidigital number, since it uses as much as digits as its factorization.

1200241201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4271602.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1200241201 is about 34644.4974130092. The cubic root of 1200241201 is about 1062.7297628321.

Adding to 1200241201 its reverse (1021420021), we get a palindrome (2221661222).

The spelling of 1200241201 in words is "one billion, two hundred million, two hundred forty-one thousand, two hundred one".

Divisors: 1 281 4271321 1200241201