1205397 has 12 divisors (see below), whose sum is σ = 1768000. Its totient is φ = 791208.

The previous prime is 1205387. The next prime is 1205411. The reversal of 1205397 is 7935021.

1205397 is a `hidden beast` number, since 120 + 539 + 7 = 666.

It is not a de Polignac number, because 1205397 - 2¹⁶ = 1139861 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1205397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205377) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 397 + ... + 1602.

2^1205397 is an apocalyptic number.

It is an amenable number.

1205397 is a deficient number, since it is larger than the sum of its proper divisors (562603).

1205397 is a wasteful number, since it uses less digits than its factorization.

1205397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2072 (or 2069 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 1205397 is about 1097.9057336584. The cubic root of 1205397 is about 106.4249289111.

The spelling of 1205397 in words is "one million, two hundred five thousand, three hundred ninety-seven".