123334456789 has 4 divisors (see below), whose sum is σ = 126667820524. Its totient is φ = 120001093056.

The previous prime is 123334456771. The next prime is 123334456807. The reversal of 123334456789 is 987654433321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 987654433321 = 587 ⋅1682545883.

It is an interprime number because it is at equal distance from previous prime (123334456771) and next prime (123334456807).

It can be written as a sum of positive squares in 2 ways, for example, as 106373822500 + 16960634289 = 326150^2 + 130233^2 .

It is a cyclic number.

It is not a de Polignac number, because 123334456789 - 2²⁵ = 123300902357 is a prime.

It is a super-2 number, since 2×123334456789² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123334456759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1666681812 + ... + 1666681885.

It is an arithmetic number, because the mean of its divisors is an integer number (31666955131).

Almost surely, 2^123334456789 is an apocalyptic number.

It is an amenable number.

123334456789 is a deficient number, since it is larger than the sum of its proper divisors (3333363735).

123334456789 is an equidigital number, since it uses as much as digits as its factorization.

123334456789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3333363734.

The product of its digits is 13063680, while the sum is 55.

The spelling of 123334456789 in words is "one hundred twenty-three billion, three hundred thirty-four million, four hundred fifty-six thousand, seven hundred eighty-nine".