1235123412 has 12 divisors (see below), whose sum is σ = 2881954656. Its totient is φ = 411707800.

The previous prime is 1235123411. The next prime is 1235123419. The reversal of 1235123412 is 2143215321.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1235123411) 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, 51463464 + ... + 51463487.

It is an arithmetic number, because the mean of its divisors is an integer number (240162888).

Almost surely, 2^1235123412 is an apocalyptic number.

1235123412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1235123412 is an abundant number, since it is smaller than the sum of its proper divisors (1646831244).

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

1235123412 is a wasteful number, since it uses less digits than its factorization.

1235123412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102926958 (or 102926956 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 1235123412 is about 35144.3226140439. The cubic root of 1235123412 is about 1072.9268606920.

Adding to 1235123412 its reverse (2143215321), we get a palindrome (3378338733).

The spelling of 1235123412 in words is "one billion, two hundred thirty-five million, one hundred twenty-three thousand, four hundred twelve".