40642003 has 2 divisors, whose sum is σ = 40642004. Its totient is φ = 40642002.

The previous prime is 40642001. The next prime is 40642037. The reversal of 40642003 is 30024604.

40642003 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40642003 - 2¹ = 40642001 is a prime.

Together with 40642001, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (40642001) 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 as a sum of consecutive naturals, namely, 20321001 + 20321002.

It is an arithmetic number, because the mean of its divisors is an integer number (20321002).

Almost surely, 2^40642003 is an apocalyptic number.

40642003 is a deficient number, since it is larger than the sum of its proper divisors (1).

40642003 is an equidigital number, since it uses as much as digits as its factorization.

40642003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 40642003 is about 6375.1080775152. The cubic root of 40642003 is about 343.8151696606.

Adding to 40642003 its reverse (30024604), we get a palindrome (70666607).

The spelling of 40642003 in words is "forty million, six hundred forty-two thousand, three".