402123323 has 4 divisors (see below), whose sum is σ = 459569520. Its totient is φ = 344677128.

The previous prime is 402123301. The next prime is 402123343. The reversal of 402123323 is 323321204.

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 402123323 - 2⁶ = 402123259 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402123295 and 402123304.

It is not an unprimeable number, because it can be changed into a prime (402123343) 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, 28723088 + ... + 28723101.

It is an arithmetic number, because the mean of its divisors is an integer number (114892380).

Almost surely, 2^402123323 is an apocalyptic number.

402123323 is a deficient number, since it is larger than the sum of its proper divisors (57446197).

402123323 is an equidigital number, since it uses as much as digits as its factorization.

402123323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57446196.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 402123323 is about 20053.0128160334. The cubic root of 402123323 is about 738.1077311070.

Adding to 402123323 its reverse (323321204), we get a palindrome (725444527).

The spelling of 402123323 in words is "four hundred two million, one hundred twenty-three thousand, three hundred twenty-three".