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1289041 = 13229433
BaseRepresentation
bin100111010101101010001
32102111020021
410322231101
5312222131
643343441
713646065
oct4725521
92374207
101289041
11800526
12521b81
13361960
14257aa5
151a6e11
hex13ab51

1289041 has 8 divisors (see below), whose sum is σ = 1397480. Its totient is φ = 1181952.

The previous prime is 1289039. The next prime is 1289053. The reversal of 1289041 is 1409821.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 70225 + 1218816 = 265^2 + 1104^2 .

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 1289041 - 21 = 1289039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1288997 and 1289015.

It is not an unprimeable number, because it can be changed into a prime (1289341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2761 + ... + 3193.

It is an arithmetic number, because the mean of its divisors is an integer number (174685).

21289041 is an apocalyptic number.

1289041 is the 656-th hex number.

It is an amenable number.

1289041 is a deficient number, since it is larger than the sum of its proper divisors (108439).

1289041 is a wasteful number, since it uses less digits than its factorization.

1289041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 1289041 is about 1135.3594144587. The cubic root of 1289041 is about 108.8317410724.

The spelling of 1289041 in words is "one million, two hundred eighty-nine thousand, forty-one".

Divisors: 1 13 229 433 2977 5629 99157 1289041