1205124004 has 24 divisors (see below), whose sum is σ = 2443269248. Its totient is φ = 509405760.

The previous prime is 1205123989. The next prime is 1205124013. The reversal of 1205124004 is 4004215021.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 292752 + ... + 296839.

Almost surely, 2^1205124004 is an apocalyptic number.

1205124004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1205124004 is an abundant number, since it is smaller than the sum of its proper divisors (1238145244).

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

1205124004 is a wasteful number, since it uses less digits than its factorization.

1205124004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589675 (or 589673 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 1205124004 is about 34714.8959958114. The cubic root of 1205124004 is about 1064.1689399995.

Adding to 1205124004 its reverse (4004215021), we get a palindrome (5209339025).

The spelling of 1205124004 in words is "one billion, two hundred five million, one hundred twenty-four thousand, four".