1205124404 has 12 divisors (see below), whose sum is σ = 2300692128. Its totient is φ = 547783800.

The previous prime is 1205124397. The next prime is 1205124409. The reversal of 1205124404 is 4044215021.

It is a self number, because there is not a number n which added to its sum of digits gives 1205124404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205124409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13694552 + ... + 13694639.

It is an arithmetic number, because the mean of its divisors is an integer number (191724344).

Almost surely, 2^1205124404 is an apocalyptic number.

It is an amenable number.

1205124404 is a deficient number, since it is larger than the sum of its proper divisors (1095567724).

1205124404 is a wasteful number, since it uses less digits than its factorization.

1205124404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27389206 (or 27389204 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 1205124404 is about 34714.9017570265. The cubic root of 1205124404 is about 1064.1690577378.

Adding to 1205124404 its reverse (4044215021), we get a palindrome (5249339425).

The spelling of 1205124404 in words is "one billion, two hundred five million, one hundred twenty-four thousand, four hundred four".