40423343 has 2 divisors, whose sum is σ = 40423344. Its totient is φ = 40423342.

The previous prime is 40423333. The next prime is 40423367. The reversal of 40423343 is 34332404.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40423343 - 2⁸ = 40423087 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40423333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20211671 + 20211672.

It is an arithmetic number, because the mean of its divisors is an integer number (20211672).

Almost surely, 2^40423343 is an apocalyptic number.

40423343 is a deficient number, since it is larger than the sum of its proper divisors (1).

40423343 is an equidigital number, since it uses as much as digits as its factorization.

40423343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 40423343 is about 6357.9354353438. The cubic root of 40423343 is about 343.1974683670.

Adding to 40423343 its reverse (34332404), we get a palindrome (74755747).

The spelling of 40423343 in words is "forty million, four hundred twenty-three thousand, three hundred forty-three".