1205240406 has 16 divisors (see below), whose sum is σ = 2493601200. Its totient is φ = 387893408.

The previous prime is 1205240401. The next prime is 1205240429. The reversal of 1205240406 is 6040425021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205240401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3463161 + ... + 3463508.

It is an arithmetic number, because the mean of its divisors is an integer number (155850075).

Almost surely, 2^1205240406 is an apocalyptic number.

1205240406 is an abundant number, since it is smaller than the sum of its proper divisors (1288360794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1205240406 is a wasteful number, since it uses less digits than its factorization.

1205240406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6926703.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 1205240406 is about 34716.5724978720. The cubic root of 1205240406 is about 1064.2032013161.

Adding to 1205240406 its reverse (6040425021), we get a palindrome (7245665427).

The spelling of 1205240406 in words is "one billion, two hundred five million, two hundred forty thousand, four hundred six".