40342223 has 2 divisors, whose sum is σ = 40342224. Its totient is φ = 40342222.

The previous prime is 40342193. The next prime is 40342229. The reversal of 40342223 is 32224304.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40342223 - 2⁸ = 40341967 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40342195 and 40342204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40342229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20171111 + 20171112.

It is an arithmetic number, because the mean of its divisors is an integer number (20171112).

Almost surely, 2^40342223 is an apocalyptic number.

40342223 is a deficient number, since it is larger than the sum of its proper divisors (1).

40342223 is an equidigital number, since it uses as much as digits as its factorization.

40342223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 40342223 is about 6351.5528022681. The cubic root of 40342223 is about 342.9677428320.

Adding to 40342223 its reverse (32224304), we get a palindrome (72566527).

The spelling of 40342223 in words is "forty million, three hundred forty-two thousand, two hundred twenty-three".