1205120370 has 32 divisors (see below), whose sum is σ = 2893419648. Its totient is φ = 321239808.

The previous prime is 1205120359. The next prime is 1205120419. The reversal of 1205120370 is 730215021.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 90267 + ... + 102753.

It is an arithmetic number, because the mean of its divisors is an integer number (90419364).

Almost surely, 2^1205120370 is an apocalyptic number.

1205120370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1205120370 is an abundant number, since it is smaller than the sum of its proper divisors (1688299278).

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

1205120370 is a wasteful number, since it uses less digits than its factorization.

1205120370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15714.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 1205120370 is about 34714.8436551283. The cubic root of 1205120370 is about 1064.1678703465.

Adding to 1205120370 its reverse (730215021), we get a palindrome (1935335391).

The spelling of 1205120370 in words is "one billion, two hundred five million, one hundred twenty thousand, three hundred seventy".