40442323 has 2 divisors, whose sum is σ = 40442324. Its totient is φ = 40442322.

The previous prime is 40442273. The next prime is 40442341. The reversal of 40442323 is 32324404.

40442323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40442323 - 2⁹ = 40441811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40442294 and 40442303.

It is not a weakly prime, because it can be changed into another prime (40442123) 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, 20221161 + 20221162.

It is an arithmetic number, because the mean of its divisors is an integer number (20221162).

Almost surely, 2^40442323 is an apocalyptic number.

40442323 is a deficient number, since it is larger than the sum of its proper divisors (1).

40442323 is an equidigital number, since it uses as much as digits as its factorization.

40442323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 40442323 is about 6359.4278830725. The cubic root of 40442323 is about 343.2511738767.

Adding to 40442323 its reverse (32324404), we get a palindrome (72766727).

The spelling of 40442323 in words is "forty million, four hundred forty-two thousand, three hundred twenty-three".