1275723 has 16 divisors (see below), whose sum is σ = 1942560. Its totient is φ = 826848.

The previous prime is 1275719. The next prime is 1275737. The reversal of 1275723 is 3275721.

It is not a de Polignac number, because 1275723 - 2² = 1275719 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1275523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 361 + ... + 1637.

It is an arithmetic number, because the mean of its divisors is an integer number (121410).

2^1275723 is an apocalyptic number.

1275723 is a deficient number, since it is larger than the sum of its proper divisors (666837).

1275723 is a wasteful number, since it uses less digits than its factorization.

1275723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323 (or 1317 counting only the distinct ones).

The product of its digits is 2940, while the sum is 27.

The square root of 1275723 is about 1129.4790834717. The cubic root of 1275723 is about 108.4556367580.

The spelling of 1275723 in words is "one million, two hundred seventy-five thousand, seven hundred twenty-three".