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1098121 is a prime number
BaseRepresentation
bin100001100000110001001
32001210100011
410030012021
5240114441
635311521
712222343
oct4140611
92053304
101098121
11690042
1244b5a1
132c5a9b
14208293
1516a581
hex10c189

1098121 has 2 divisors, whose sum is σ = 1098122. Its totient is φ = 1098120.

The previous prime is 1098109. The next prime is 1098133. The reversal of 1098121 is 1218901.

It is a balanced prime because it is at equal distance from previous prime (1098109) and next prime (1098133).

It can be written as a sum of positive squares in only one way, i.e., 1071225 + 26896 = 1035^2 + 164^2 .

It is an emirp because it is prime and its reverse (1218901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1098121 - 217 = 967049 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1098092 and 1098101.

It is not a weakly prime, because it can be changed into another prime (1098101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549060 + 549061.

It is an arithmetic number, because the mean of its divisors is an integer number (549061).

21098121 is an apocalyptic number.

It is an amenable number.

1098121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1098121 is an equidigital number, since it uses as much as digits as its factorization.

1098121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 1098121 is about 1047.9126872025. The cubic root of 1098121 is about 103.1692006422.

The spelling of 1098121 in words is "one million, ninety-eight thousand, one hundred twenty-one".