40320003 has 4 divisors (see below), whose sum is σ = 53760008. Its totient is φ = 26880000.

The previous prime is 40320001. The next prime is 40320011. The reversal of 40320003 is 30002304.

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

It is not a de Polignac number, because 40320003 - 2¹ = 40320001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40320001) 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, 6719998 + ... + 6720003.

It is an arithmetic number, because the mean of its divisors is an integer number (13440002).

Almost surely, 2^40320003 is an apocalyptic number.

40320003 is a deficient number, since it is larger than the sum of its proper divisors (13440005).

40320003 is a wasteful number, since it uses less digits than its factorization.

40320003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13440004.

The product of its (nonzero) digits is 72, while the sum is 12.

The square root of 40320003 is about 6349.8033827828. The cubic root of 40320003 is about 342.9047637971.

Adding to 40320003 its reverse (30002304), we get a palindrome (70322307).

The spelling of 40320003 in words is "forty million, three hundred twenty thousand, three".