1205873 has 4 divisors (see below), whose sum is σ = 1269360. Its totient is φ = 1142388.

The previous prime is 1205843. The next prime is 1205891. The reversal of 1205873 is 3785021.

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.

It is a cyclic number.

It is not a de Polignac number, because 1205873 - 2¹⁸ = 943729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1205843) 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, 31715 + ... + 31752.

It is an arithmetic number, because the mean of its divisors is an integer number (317340).

2^1205873 is an apocalyptic number.

It is an amenable number.

1205873 is a deficient number, since it is larger than the sum of its proper divisors (63487).

1205873 is an equidigital number, since it uses as much as digits as its factorization.

1205873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63486.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 1205873 is about 1098.1224886141. The cubic root of 1205873 is about 106.4389358039.

The spelling of 1205873 in words is "one million, two hundred five thousand, eight hundred seventy-three".