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BaseRepresentation
bin10011111001
31202011
4103321
520043
65521
73466
oct2371
91664
101273
11a58
128a1
1376c
1466d
1559d
hex4f9

1273 has 4 divisors (see below), whose sum is σ = 1360. Its totient is φ = 1188.

The previous prime is 1259. The next prime is 1277. The reversal of 1273 is 3721.

Adding to 1273 its reverse (3721), we get a palindrome (4994).

1273 is nontrivially palindromic in base 2.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3721 = 612.

It is a cyclic number.

It is not a de Polignac number, because 1273 - 29 = 761 is a prime.

It is a Duffinian number.

It is a plaindrome in base 7, base 14 and base 15.

It is a nialpdrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (1277) 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 in 3 ways as a sum of consecutive naturals, for example, 15 + ... + 52.

It is an arithmetic number, because the mean of its divisors is an integer number (340).

It is an amenable number.

1273 is a deficient number, since it is larger than the sum of its proper divisors (87).

1273 is an equidigital number, since it uses as much as digits as its factorization.

1273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86.

The product of its digits is 42, while the sum is 13.

The square root of 1273 is about 35.6791255498. The cubic root of 1273 is about 10.8378416476.

The spelling of 1273 in words is "one thousand, two hundred seventy-three", and thus it is an iban number.

Divisors: 1 19 67 1273