6402423 has 4 divisors (see below), whose sum is σ = 8536568. Its totient is φ = 4268280.

The previous prime is 6402413. The next prime is 6402433. The reversal of 6402423 is 3242046.

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

It is an interprime number because it is at equal distance from previous prime (6402413) and next prime (6402433).

It is not a de Polignac number, because 6402423 - 2⁵ = 6402391 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6402423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6402413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1067068 + ... + 1067073.

It is an arithmetic number, because the mean of its divisors is an integer number (2134142).

Almost surely, 2^6402423 is an apocalyptic number.

6402423 is a deficient number, since it is larger than the sum of its proper divisors (2134145).

6402423 is a wasteful number, since it uses less digits than its factorization.

6402423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134144.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 6402423 is about 2530.3009702405. The cubic root of 6402423 is about 185.6869807419.

Adding to 6402423 its reverse (3242046), we get a palindrome (9644469).

The spelling of 6402423 in words is "six million, four hundred two thousand, four hundred twenty-three".