123317429 has 4 divisors (see below), whose sum is σ = 129807840. Its totient is φ = 116827020.

The previous prime is 123317423. The next prime is 123317443. The reversal of 123317429 is 924713321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123317429 - 2⁴ = 123317413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123317395 and 123317404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123317423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3245177 + ... + 3245214.

It is an arithmetic number, because the mean of its divisors is an integer number (32451960).

Almost surely, 2^123317429 is an apocalyptic number.

123317429 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

123317429 is a deficient number, since it is larger than the sum of its proper divisors (6490411).

123317429 is an equidigital number, since it uses as much as digits as its factorization.

123317429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6490410.

The product of its digits is 9072, while the sum is 32.

The square root of 123317429 is about 11104.8380897697. The cubic root of 123317429 is about 497.7464301054.

The spelling of 123317429 in words is "one hundred twenty-three million, three hundred seventeen thousand, four hundred twenty-nine".