1270105 has 4 divisors (see below), whose sum is σ = 1524132. Its totient is φ = 1016080.

The previous prime is 1270103. The next prime is 1270111. The reversal of 1270105 is 5010721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5010721 = 149 ⋅33629.

It can be written as a sum of positive squares in 2 ways, for example, as 295936 + 974169 = 544^2 + 987^2 .

It is not a de Polignac number, because 1270105 - 2¹ = 1270103 is a prime.

It is a super-2 number, since 2×1270105² = 3226333422050, which contains 22 as substring.

It is an Ulam number.

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

It is a Duffinian number.

1270105 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1270103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127006 + ... + 127015.

It is an arithmetic number, because the mean of its divisors is an integer number (381033).

2^1270105 is an apocalyptic number.

It is an amenable number.

1270105 is a deficient number, since it is larger than the sum of its proper divisors (254027).

1270105 is an equidigital number, since it uses as much as digits as its factorization.

1270105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254026.

The product of its (nonzero) digits is 70, while the sum is 16.

The square root of 1270105 is about 1126.9893522123. The cubic root of 1270105 is about 108.2961976596.

Adding to 1270105 its reverse (5010721), we get a palindrome (6280826).

The spelling of 1270105 in words is "one million, two hundred seventy thousand, one hundred five".