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262121 is a prime number
BaseRepresentation
bin111111111111101001
3111022120012
4333333221
531341441
65341305
72141126
oct777751
9438505
10262121
11169a32
12107835
1392402
146b74d
15529eb
hex3ffe9

262121 has 2 divisors, whose sum is σ = 262122. Its totient is φ = 262120.

The previous prime is 262111. The next prime is 262127. The reversal of 262121 is 121262.

Adding to 262121 its reverse (121262), we get a palindrome (383383).

It can be divided in two parts, 262 and 121, that added together give a palindrome (383).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 235225 + 26896 = 485^2 + 164^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-262121 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a nialpdrome in base 4 and base 8.

It is a junction number, because it is equal to n+sod(n) for n = 262096 and 262105.

It is not a weakly prime, because it can be changed into another prime (262127) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131060 + 131061.

It is an arithmetic number, because the mean of its divisors is an integer number (131061).

2262121 is an apocalyptic number.

It is an amenable number.

262121 is a deficient number, since it is larger than the sum of its proper divisors (1).

262121 is an equidigital number, since it uses as much as digits as its factorization.

262121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48, while the sum is 14.

The square root of 262121 is about 511.9775385698. The cubic root of 262121 is about 63.9981282005.

The spelling of 262121 in words is "two hundred sixty-two thousand, one hundred twenty-one".