1203205 has 4 divisors (see below), whose sum is σ = 1443852. Its totient is φ = 962560.

The previous prime is 1203193. The next prime is 1203211. The reversal of 1203205 is 5023021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5023021 = 1453 ⋅3457.

It can be written as a sum of positive squares in 2 ways, for example, as 217156 + 986049 = 466^2 + 993^2 .

It is not a de Polignac number, because 1203205 - 2⁷ = 1203077 is a prime.

It is a Duffinian number.

1203205 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120316 + ... + 120325.

It is an arithmetic number, because the mean of its divisors is an integer number (360963).

2^1203205 is an apocalyptic number.

It is an amenable number.

1203205 is a deficient number, since it is larger than the sum of its proper divisors (240647).

1203205 is an equidigital number, since it uses as much as digits as its factorization.

1203205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240646.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 1203205 is about 1096.9070152023. The cubic root of 1203205 is about 106.3603789482.

Adding to 1203205 its reverse (5023021), we get a palindrome (6226226).

The spelling of 1203205 in words is "one million, two hundred three thousand, two hundred five".