1273073 has 4 divisors (see below), whose sum is σ = 1328448. Its totient is φ = 1217700.

The previous prime is 1273039. The next prime is 1273087. The reversal of 1273073 is 3703721.

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 an emirpimes, since its reverse is a distinct semiprime: 3703721 = 7 ⋅529103.

It is a cyclic number.

It is not a de Polignac number, because 1273073 - 2¹⁰ = 1272049 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 55351 = 1273073 / (1 + 2 + 7 + 3 + 0 + 7 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1273033) 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, 27653 + ... + 27698.

It is an arithmetic number, because the mean of its divisors is an integer number (332112).

2^1273073 is an apocalyptic number.

It is an amenable number.

1273073 is a deficient number, since it is larger than the sum of its proper divisors (55375).

1273073 is an equidigital number, since it uses as much as digits as its factorization.

1273073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55374.

The product of its (nonzero) digits is 882, while the sum is 23.

The square root of 1273073 is about 1128.3053664678. The cubic root of 1273073 is about 108.3804880845.

Adding to 1273073 its reverse (3703721), we get a palindrome (4976794).

The spelling of 1273073 in words is "one million, two hundred seventy-three thousand, seventy-three".