6442403 has 12 divisors (see below), whose sum is σ = 7277760. Its totient is φ = 5694480.

The previous prime is 6442399. The next prime is 6442427. The reversal of 6442403 is 3042446.

It is a happy number.

6442403 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6442403 - 2² = 6442399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6442433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3758 + ... + 5196.

It is an arithmetic number, because the mean of its divisors is an integer number (606480).

Almost surely, 2^6442403 is an apocalyptic number.

6442403 is a deficient number, since it is larger than the sum of its proper divisors (835357).

6442403 is a wasteful number, since it uses less digits than its factorization.

6442403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1498 (or 1487 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 6442403 is about 2538.1889212586. The cubic root of 6442403 is about 186.0726871263.

Adding to 6442403 its reverse (3042446), we get a palindrome (9484849).

The spelling of 6442403 in words is "six million, four hundred forty-two thousand, four hundred three".