402423 has 8 divisors (see below), whose sum is σ = 613248. Its totient is φ = 229944.

The previous prime is 402419. The next prime is 402443. The reversal of 402423 is 324204.

It is a happy number.

402423 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 402423 - 2² = 402419 is a prime.

402423 is strictly pandigital in base 7.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402403) 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, 9561 + ... + 9602.

It is an arithmetic number, because the mean of its divisors is an integer number (76656).

2⁴⁰²⁴²³ is an apocalyptic number.

402423 is a deficient number, since it is larger than the sum of its proper divisors (210825).

402423 is a wasteful number, since it uses less digits than its factorization.

402423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19173.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 402423 is about 634.3681896186. The cubic root of 402423 is about 73.8291040533.

Adding to 402423 its reverse (324204), we get a palindrome (726627).

The spelling of 402423 in words is "four hundred two thousand, four hundred twenty-three", and thus it is an iban number.