42043263398923 has 2 divisors, whose sum is σ = 42043263398924. Its totient is φ = 42043263398922.

The previous prime is 42043263398833. The next prime is 42043263398951. The reversal of 42043263398923 is 32989336234024.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42043263398923 is a prime.

It is not a weakly prime, because it can be changed into another prime (42043263498923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21021631699461 + 21021631699462.

It is an arithmetic number, because the mean of its divisors is an integer number (21021631699462).

Almost surely, 2^{42043263398923} is an apocalyptic number.

42043263398923 is a deficient number, since it is larger than the sum of its proper divisors (1).

42043263398923 is an equidigital number, since it uses as much as digits as its factorization.

42043263398923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40310784, while the sum is 58.

The spelling of 42043263398923 in words is "forty-two trillion, forty-three billion, two hundred sixty-three million, three hundred ninety-eight thousand, nine hundred twenty-three".