1213234120 has 48 divisors (see below), whose sum is σ = 3175459740. Its totient is φ = 415965312.

The previous prime is 1213234093. The next prime is 1213234133. The reversal of 1213234120 is 214323121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1164037924 + 49196196 = 34118^2 + 7014^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 307539 + ... + 311458.

Almost surely, 2^1213234120 is an apocalyptic number.

1213234120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213234120 is an abundant number, since it is smaller than the sum of its proper divisors (1962225620).

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

1213234120 is a wasteful number, since it uses less digits than its factorization.

1213234120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619022 (or 619011 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1213234120 is about 34831.5104467205. The cubic root of 1213234120 is about 1066.5507821154.

Adding to 1213234120 its reverse (214323121), we get a palindrome (1427557241).

The spelling of 1213234120 in words is "one billion, two hundred thirteen million, two hundred thirty-four thousand, one hundred twenty".