1205130120 has 64 divisors (see below), whose sum is σ = 3658979520. Its totient is φ = 317493504.

The previous prime is 1205130109. The next prime is 1205130127. The reversal of 1205130120 is 210315021.

It is a super-2 number, since 2×1205130120² = 2904677212262428800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1205130120.

It is not an unprimeable number, because it can be changed into a prime (1205130127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50539 + ... + 70458.

It is an arithmetic number, because the mean of its divisors is an integer number (57171555).

Almost surely, 2^1205130120 is an apocalyptic number.

1205130120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1205130120 is an abundant number, since it is smaller than the sum of its proper divisors (2453849400).

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

1205130120 is a wasteful number, since it uses less digits than its factorization.

1205130120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121094 (or 121090 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 1205130120 is about 34714.9840846860. The cubic root of 1205130120 is about 1064.1707402144.

Adding to 1205130120 its reverse (210315021), we get a palindrome (1415445141).

The spelling of 1205130120 in words is "one billion, two hundred five million, one hundred thirty thousand, one hundred twenty".