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1320161 is a prime number
BaseRepresentation
bin101000010010011100001
32111001220212
411002103201
5314221121
644143505
714135603
oct5022341
92431825
101320161
11821947
12537b95
13372b7b
14265173
151b125b
hex1424e1

1320161 has 2 divisors, whose sum is σ = 1320162. Its totient is φ = 1320160.

The previous prime is 1320157. The next prime is 1320173. The reversal of 1320161 is 1610231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 891136 + 429025 = 944^2 + 655^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320161 - 22 = 1320157 is a prime.

It is not a weakly prime, because it can be changed into another prime (1320181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660080 + 660081.

It is an arithmetic number, because the mean of its divisors is an integer number (660081).

21320161 is an apocalyptic number.

It is an amenable number.

1320161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320161 is an equidigital number, since it uses as much as digits as its factorization.

1320161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1320161 is about 1148.9825934278. The cubic root of 1320161 is about 109.7005907353.

Adding to 1320161 its reverse (1610231), we get a palindrome (2930392).

The spelling of 1320161 in words is "one million, three hundred twenty thousand, one hundred sixty-one".