1273155 has 16 divisors (see below), whose sum is σ = 2194080. Its totient is φ = 626688.

The previous prime is 1273127. The next prime is 1273157. The reversal of 1273155 is 5513721.

It is not a de Polignac number, because 1273155 - 2⁸ = 1272899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1273157) by changing a digit.

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, 3070 + ... + 3459.

It is an arithmetic number, because the mean of its divisors is an integer number (137130).

2^1273155 is an apocalyptic number.

1273155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1273155 is a deficient number, since it is larger than the sum of its proper divisors (920925).

1273155 is a wasteful number, since it uses less digits than its factorization.

1273155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6550.

The product of its digits is 1050, while the sum is 24.

The square root of 1273155 is about 1128.3417035632. The cubic root of 1273155 is about 108.3828150025.

Adding to 1273155 its reverse (5513721), we get a palindrome (6786876).

The spelling of 1273155 in words is "one million, two hundred seventy-three thousand, one hundred fifty-five".