1234123340 has 48 divisors (see below), whose sum is σ = 2754635520. Its totient is φ = 463112640.

The previous prime is 1234123339. The next prime is 1234123357. The reversal of 1234123340 is 433214321.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23375 + ... + 54905.

It is an arithmetic number, because the mean of its divisors is an integer number (57388240).

Almost surely, 2^1234123340 is an apocalyptic number.

1234123340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1234123340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1377317760).

1234123340 is an abundant number, since it is smaller than the sum of its proper divisors (1520512180).

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

1234123340 is a wasteful number, since it uses less digits than its factorization.

1234123340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31662 (or 31660 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1234123340 is about 35130.0916594307. The cubic root of 1234123340 is about 1072.6372016903.

Adding to 1234123340 its reverse (433214321), we get a palindrome (1667337661).

The spelling of 1234123340 in words is "one billion, two hundred thirty-four million, one hundred twenty-three thousand, three hundred forty".