1273723 has 4 divisors (see below), whose sum is σ = 1389528. Its totient is φ = 1157920.

The previous prime is 1273721. The next prime is 1273729. The reversal of 1273723 is 3273721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1273723 - 2¹ = 1273721 is a prime.

It is a Duffinian number.

1273723 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1273721) 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, 57886 + ... + 57907.

It is an arithmetic number, because the mean of its divisors is an integer number (347382).

2^1273723 is an apocalyptic number.

1273723 is a deficient number, since it is larger than the sum of its proper divisors (115805).

1273723 is a wasteful number, since it uses less digits than its factorization.

1273723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115804.

The product of its digits is 1764, while the sum is 25.

The square root of 1273723 is about 1128.5933723002. The cubic root of 1273723 is about 108.3989304234.

The spelling of 1273723 in words is "one million, two hundred seventy-three thousand, seven hundred twenty-three".