123729343 has 8 divisors (see below), whose sum is σ = 126133200. Its totient is φ = 121359400.

The previous prime is 123729337. The next prime is 123729367. The reversal of 123729343 is 343927321.

It is not a de Polignac number, because 123729343 - 2²⁵ = 90174911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123729299 and 123729308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123729943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1156296 + ... + 1156402.

It is an arithmetic number, because the mean of its divisors is an integer number (15766650).

Almost surely, 2^123729343 is an apocalyptic number.

123729343 is a deficient number, since it is larger than the sum of its proper divisors (2403857).

123729343 is an frugal number, since it uses more digits than its factorization.

123729343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422 (or 208 counting only the distinct ones).

The product of its digits is 27216, while the sum is 34.

The square root of 123729343 is about 11123.3692287903. The cubic root of 123729343 is about 498.3000173350.

The spelling of 123729343 in words is "one hundred twenty-three million, seven hundred twenty-nine thousand, three hundred forty-three".