120405323 has 4 divisors (see below), whose sum is σ = 120429600. Its totient is φ = 120381048.

The previous prime is 120405317. The next prime is 120405331. The reversal of 120405323 is 323504021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120405323 - 2¹² = 120401227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120405295 and 120405304.

It is not an unprimeable number, because it can be changed into a prime (120405343) 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, 1715 + ... + 15612.

It is an arithmetic number, because the mean of its divisors is an integer number (30107400).

Almost surely, 2^120405323 is an apocalyptic number.

120405323 is a deficient number, since it is larger than the sum of its proper divisors (24277).

120405323 is an equidigital number, since it uses as much as digits as its factorization.

120405323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24276.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 120405323 is about 10972.9359334683. The cubic root of 120405323 is about 493.7971310455.

Adding to 120405323 its reverse (323504021), we get a palindrome (443909344).

The spelling of 120405323 in words is "one hundred twenty million, four hundred five thousand, three hundred twenty-three".