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1241305 = 5133113
BaseRepresentation
bin100101111000011011001
32100001202021
410233003121
5304210210
642334441
713356652
oct4570331
92301667
101241305
1177867a
124ba421
13346000
14244529
15197bda
hex12f0d9

1241305 has 16 divisors (see below), whose sum is σ = 1627920. Its totient is φ = 908544.

The previous prime is 1241291. The next prime is 1241321. The reversal of 1241305 is 5031421.

1241305 = T68 + T69 + ... + T197.

It can be written as a sum of positive squares in 8 ways, for example, as 1194649 + 46656 = 1093^2 + 216^2 .

It is not a de Polignac number, because 1241305 - 29 = 1240793 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 10929 + ... + 11041.

It is an arithmetic number, because the mean of its divisors is an integer number (101745).

21241305 is an apocalyptic number.

It is an amenable number.

1241305 is a deficient number, since it is larger than the sum of its proper divisors (386615).

1241305 is an equidigital number, since it uses as much as digits as its factorization.

1241305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1241305 is about 1114.1386807754. The cubic root of 1241305 is about 107.4713823228.

Adding to 1241305 its reverse (5031421), we get a palindrome (6272726).

The spelling of 1241305 in words is "one million, two hundred forty-one thousand, three hundred five".

Divisors: 1 5 13 65 113 169 565 845 1469 2197 7345 10985 19097 95485 248261 1241305