423444340241423 has 2 divisors, whose sum is σ = 423444340241424. Its totient is φ = 423444340241422.

The previous prime is 423444340241369. The next prime is 423444340241431. The reversal of 423444340241423 is 324142043444324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423444340241423 - 2³⁶ = 423375620764687 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423444340244423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211722170120711 + 211722170120712.

It is an arithmetic number, because the mean of its divisors is an integer number (211722170120712).

Almost surely, 2^{423444340241423} is an apocalyptic number.

423444340241423 is a deficient number, since it is larger than the sum of its proper divisors (1).

423444340241423 is an equidigital number, since it uses as much as digits as its factorization.

423444340241423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3538944, while the sum is 44.

Adding to 423444340241423 its reverse (324142043444324), we get a palindrome (747586383685747).

The spelling of 423444340241423 in words is "four hundred twenty-three trillion, four hundred forty-four billion, three hundred forty million, two hundred forty-one thousand, four hundred twenty-three".